From ae9de8fb7b4e5ae80d16085f26da94d9fb9971d5 Mon Sep 17 00:00:00 2001
From: Jiban Kumar Majumdar <jibanmajumdar@gmail.com>
Date: Fri, 19 Jul 2024 00:38:16 +0530
Subject: [PATCH] Add files via upload

---
 Oxygen.html | 609 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 609 insertions(+)
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Oxygen</title>
+    <script src="chem1.js" defer></script>
+    <meta name="keywords" content="exercises, balancing, chemistry, equations, hydrogen, Oxygen, Carbon-dioxide, carbon-monoxide, preparation">
+    <meta name="author" content="Jiban Majumdar">
+    <link rel="stylesheet" href="mystyle.css">
+</head>
+<body>
+    <table align="center" style="width: 100%; border: 1px solid;">
+
+            <tr>
+                <td>
+                    <a href="index.html">Home Page</a>
+                </td>
+                <td>
+                    <a href="equations.html">Intermediate Equations</a>
+                </td>
+                <td>
+                    <a href="assorted.html">Assorted Equations</a>
+                </td>
+                <td>
+                    <a href="Hydrogen.html">Hydrogen</a>
+                </td>
+                <td>
+                    <a href="Carbon Monoxide.html">Carbon Monoxide</a>
+                </td>
+                <td>
+                    <a href="Carbon Dioxide.html">Carbon Dioxide</a>
+                </td>
+                <td>
+                    <a href="Nitrogen.html">Nitrogen</a>
+                </td>
+            </tr>
+        </table>
+        <h1 style="text-align:center;text-align:top;">Oxygen</h1>
+        <h2>Practise balancing equations:</h2>
+        <h3>Direction:</h3>
+        <ul>
+            <li>In  the following equations you will see a blank box before the symbol of each compound and element. Enter the lowest possible number in each box, or leave the box blank if you think the chemical needn't have a number (i.e. the number is equivalent to '1').</li>
+            <li>
+                When you think the equation is balanced, click on the small button 
+                <span style="color:blue;">
+                    <b>"Check answer"</b>
+                </span>
+                that appears below it.
+            </li>
+            <lI>
+                If your equation is incorrect, then click the button 
+                <span style="color:blue;">
+                    <b>"Reset"</b>
+                </span>
+                and try balancing the  equation again.
+            </li>
+            <li>
+                In case you are in a hurry or are unable to balance, then click the button 
+                <span style="color:blue;">
+                    <b>"Show answer."</b>
+                </span>
+            </li>
+        </ul>
+        <h3>Note:</h3>
+        If you get no response after clicking 'Check answer' or 'Show answer', your browser has disabled to run this program. Enable it by clicking below the 'address bar' and follow the instructions.
+
+
+        <form name="equations">
+            <ul>
+                <li>
+                    <h4>Preparation of Oxygen(Laboratory Method):</h4>
+                </li>
+                <ul>
+                    <li>In the presence of Manganese(IV) oxide(catalyst), Hydrogen peroxide decomposes faster into water and Oxygen:</li>
+                    <p style="font-size:115%; text-align:center;">
+                        <input style="font-size: 16px; text-align: center" size=1 name=q1a></input>
+                        H<sub>2</sub>
+                        O<sub>2</sub>
+                         &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q1b></input>
+                        H<sub>2</sub>
+                        O + <input style="font-size: 16px; text-align: center" size=1 name=q1c>
+                        O<sub>2</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(1,'Preparation of Oxygen(Laboratory Method)',2,2,1,0,0,0,'H<sub>2</sub>O<sub>2</sub>','H<sub>2</sub>O + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(1,'Preparation of Oxygen(Laboratory Method)',2,2,1,0,0,0,'2 H<sub>2</sub>O<sub>2</sub>','2 H<sub>2</sub>O + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>In the presence of Manganese(IV) oxide(catalyst), Potassium chlorate decomposes faster into Potassium chloride and Oxygen:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q2a></input>
+    KClO<sub>3</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q2b></input>
+    KCl + <input style="font-size: 16px; text-align: center" size=1 name=q2c>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(2,'Preparation of Oxygen(Laboratory Method)',2,2,3,0,0,0,'KClO<sub>3</sub>','KCl + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(2,'Preparation of Oxygen(Laboratory Method)',2,2,3,0,0,0,'2 KClO<sub>3</sub>','2 KCl + 3 O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Sodium peroxide reacts with water to form Sodium hydroxide and Oxygen:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q3a></input>
+    Na<sub>2</sub>
+    O<sub>2</sub>
+    + <input style="font-size: 16px; text-align: center" size=1 name=q3b></input>
+    H<sub>2</sub>
+    O &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q3c></input>
+    NaOH+ <input style="font-size: 16px; text-align: center" size=1 name=q3d>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(3,'Preparation of Oxygen(Laboratory Method)',2,2,4,1,0,0,'Na<sub>2</sub>O<sub>2</sub> + H<sub>2</sub>O','NaOH + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(3,'Preparation of Oxygen(Laboratory Method)',2,2,4,1,0,0,'2 Na<sub>2</sub>O<sub>2</sub> + 2 H<sub>2</sub>O','4 NaOH + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+</ul><p></p>
+<li>
+    <h4>Preparation of Oxygen(Other methods):</h4>
+</li>
+<ul>
+    <li>When chocolate brown Lead(IV) oxide is heated strongly, it decomposes into yellow Lead(II) oxide powder and Oxygen gas:</li>
+    <p style="font-size:115%; text-align:center;">
+        <input style="font-size: 16px; text-align: center" size=1 name=q4a></input>
+        PbO<sub>2</sub>
+         &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q4b></input>
+        PbO + <input style="font-size: 16px; text-align: center" size=1 name=q4c>
+        O<sub>2</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(4,'Preparation of Oxygen(Other methods)',2,2,1,0,0,0,'PbO<sub>2</sub>','PbO + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(4,'Preparation of Oxygen(Other methods)',2,2,1,0,0,0,'2 PbO<sub>2</sub>','2PbO + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When orange-red Lead(II,IV) oxide(Tri Lead tetroxide) is heated strongly, it decomposes into yellow lead(II) oxide powder and Oxygen gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q5a></input>
+    Pb<sub>3</sub>
+    O<sub>4</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q5b></input>
+    PbO + <input style="font-size: 16px; text-align: center" size=1 name=q5c>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(5,'Preparation of Oxygen(Other methods)',2,6,1,0,0,0,'Pb<sub>3</sub>O<sub>4</sub>','PbO + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(5,'Preparation of Oxygen(Other methods)',2,6,1,0,0,0,'2 Pb<sub>3</sub>O<sub>4</sub>','6 PbO + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When red Mercury(II) oxide is heated strongly, it decomposes into Mercury and Oxygen gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q6a></input>
+    HgO &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q6b></input>
+    Hg + <input style="font-size: 16px; text-align: center" size=1 name=q6c>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(6,'Preparation of Oxygen(Other methods)',2,2,1,0,0,0,'HgO','Hg + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(6,'Preparation of Oxygen(Other methods)',2,2,1,0,0,0,'2 HgO','2Hg + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When brown Silver oxide is heated strongly, it decomposes into Silver and Oxygen gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q7a></input>
+    Ag<sub>2</sub>
+    O &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q7b></input>
+    Ag + <input style="font-size: 16px; text-align: center" size=1 name=q7c>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(7,'Preparation of Oxygen(Other methods)',2,4,1,0,0,0,'Ag<sub>2</sub>O','Ag + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(7,'Preparation of Oxygen(Other methods)',2,4,1,0,0,0,'2 Ag<sub>2</sub>O','4 Ag + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When Potassium permanganate is heated, it decomposes into Potassium manganate, Manganese(IV) oxide and Oxygen gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q8a></input>
+    KMnO<sub>4</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q8b></input>
+    K<sub>2</sub>
+    MnO<sub>4</sub>
+    + <input style="font-size: 16px; text-align: center" size=1 name=q8c>
+    MnO<sub>2</sub>
+    +
+<input style="font-size: 16px; text-align: center" size=1 name=q8d>
+    O<sub>2</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(8,'Preparation of Oxygen(Other methods)',2,1,1,1,0,0,'KMnO<sub>4</sub> ','K<sub>2</sub>MnO<sub>4</sub>+ MnO<sub>2</sub> + O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(8,'Preparation of Oxygen(Other methods)',2,1,1,1,0,0,'2 KMnO<sub>4</sub> ','K<sub>2</sub>MnO<sub>4</sub>+ MnO<sub>2</sub> + O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+</ul><p></p>
+<li>
+    <h4>Reactions of Oxygen:</h4>
+</li>
+<ul>
+    <li>
+        <h4>With Non-metals:</h4>
+    </li>
+    <ul>
+        <li>A mixture of Hydrogen and Oxygen, when ignited, burns with a 'pop' sound to form water:</li>
+        <p style="font-size:115%; text-align:center;">
+            <input style="font-size: 16px; text-align: center" size=1 name=q9a></input>
+            H<sub>2</sub>
+            + <input style="font-size: 16px; text-align: center" size=1 name=q9b></input>
+            O<sub>2</sub>
+             &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q9c></input>
+            H<sub>2</sub>
+            O
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(9,'Reactions of Oxygen',2,1,2,0,0,0,'H<sub>2</sub> + O<sub>2</sub>','H<sub>2</sub>O');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(9,'Reactions of Oxygen',2,1,2,0,0,0,'2 H<sub>2</sub> + O<sub>2</sub>','2 H<sub>2</sub>O');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Carbon , when ignited,burns in excess Oxygen to form Carbon dioxide:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q10a></input>
+    C + <input style="font-size: 16px; text-align: center" size=1 name=q10b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q10c></input>
+    CO<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(10,'Reactions of Oxygen',1,1,1,0,0,0,'C + O<sub>2</sub>','CO<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(10,'Reactions of Oxygen',1,1,1,0,0,0,'C + O<sub>2</sub>','CO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>In limited amount of air Carbon , when ignited,forms Carbon monoxide:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q11a></input>
+    C + <input style="font-size: 16px; text-align: center" size=1 name=q11b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q11c></input>
+    CO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(11,'Reactions of Oxygen',2,1,2,0,0,0,'C + O<sub>2</sub>','CO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(11,'Reactions of Oxygen',2,1,2,0,0,0,'2 C + O<sub>2</sub>','2 CO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>
+    At 3000<sup>o</sup>
+    C or during lightning discharge, Nitrogen reacts with Oxygen to form Nirogen monoxide(Nitric oxide):
+</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q12a></input>
+    N<sub>2</sub>
+    + <input style="font-size: 16px; text-align: center" size=1 name=q12b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q12c></input>
+    NO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(12,'Reactions of Oxygen',1,1,2,0,0,0,'N<sub>2</sub> + O<sub>2</sub>','NO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(12,'Reactions of Oxygen',1,1,2,0,0,0,'N<sub>2</sub> + O<sub>2</sub>','2 NO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Phosphorous, when ignited,burns in Oxygen to form white fumes of Phosphorous pentoxide:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q13a></input>
+    P + <input style="font-size: 16px; text-align: center" size=1 name=q13b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q13c></input>
+    P<sub>2</sub>
+    O<sub>5</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(13,'Reactions of Oxygen',4,5,2,0,0,0,'P + O<sub>2</sub>','P<sub>2</sub>O<sub>5</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(13,'Reactions of Oxygen',4,5,2,0,0,0,'4 P + 5 O<sub>2</sub>','2 P<sub>2</sub>O<sub>5</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Sulphur , when ignited,burns in Oxygen with a blue flame  to form colourless and pungent smelling Sulphur dioxide gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q14a></input>
+    S + <input style="font-size: 16px; text-align: center" size=1 name=q14b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q14c></input>
+    SO<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(14,'Reactions of Oxygen',1,1,1,0,0,0,'S + O<sub>2</sub>','SO<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(14,'Reactions of Oxygen',1,1,1,0,0,0,'S + O<sub>2</sub>','SO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+</ul></ul>
+<ul>
+    <li>
+        <h4>With Metals:</h4>
+    </li>
+    <ul>
+        <li>Potassium metal, when ignited, burns in oxygen with a lilac flame to form a mixture of Potassium oxide and Potassium superoxide:</li>
+        <p style="font-size:115%; text-align:center;">
+            <input style="font-size: 16px; text-align: center" size=1 name=q15a></input>
+            K + <input style="font-size: 16px; text-align: center" size=1 name=q15b></input>
+            O<sub>2</sub>
+             &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q15c></input>
+            K<sub>2</sub>
+            O
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(15,'Reactions of Oxygen',4,1,2,0,0,0,'K + O<sub>2</sub>','K<sub>2</sub>O');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(15,'Reactions of Oxygen',4,1,2,0,0,0,'4K + O<sub>2</sub>','2 K<sub>2</sub>O');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q16a></input>
+    K + <input style="font-size: 16px; text-align: center" size=1 name=q16b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q16c></input>
+    KO<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(16,'Reactions of Oxygen',1,1,1,0,0,0,'K + O<sub>2</sub>','KO<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(16,'Reactions of Oxygen',1,1,1,0,0,0,'K + O<sub>2</sub>',' KO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Sodium metal, when ignited, burns in oxygen with a yellow flame to form a mixture of Sodium oxide and Sodium peroxide:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q17a></input>
+    Na + <input style="font-size: 16px; text-align: center" size=1 name=q17b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q17c></input>
+    Na<sub>2</sub>
+    O
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(17,'Reactions of Oxygen',4,1,2,0,0,0,'Na + O<sub>2</sub>','Na<sub>2</sub>O');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(17,'Reactions of Oxygen',4,1,2,0,0,0,'4Na + O<sub>2</sub>','2 Na<sub>2</sub>O');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q18a></input>
+    Na + <input style="font-size: 16px; text-align: center" size=1 name=q18b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q18c></input>
+    Na<sub>2</sub>
+    O<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(18,'Reactions of Oxygen',2,1,1,0,0,0,'Na + O<sub>2</sub>','Na<sub>2</sub>O<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(16,'Reactions of Oxygen',2,1,1,0,0,0,'2 Na + O<sub>2</sub>',' Na<sub>2</sub>O<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Calcium metal, when ignited, burns in oxygen with a brick red flame to form white Calcium oxide powder:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q19a></input>
+    Ca + <input style="font-size: 16px; text-align: center" size=1 name=q19b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q19c></input>
+    CaO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(19,'Reactions of Oxygen',2,1,2,0,0,0,'Ca + O<sub>2</sub>','CaO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(19,'Reactions of Oxygen',2,1,2,0,0,0,'2 Ca + O<sub>2</sub>',' 2 CaO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Magnesium metal, when ignited, burns in oxygen with a dazzling flame to form white Magnesium oxide powder:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q20a></input>
+    Mg + <input style="font-size: 16px; text-align: center" size=1 name=q20b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q20c></input>
+    MgO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(20,'Reactions of Oxygen',2,1,2,0,0,0,'Mg + O<sub>2</sub>','MgO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(20,'Reactions of Oxygen',2,1,2,0,0,0,'2 Mg + O<sub>2</sub>',' 2 MgO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Aluminium metal reacts with oxygen to form white Aluminium oxide powder:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q21a></input>
+    Al + <input style="font-size: 16px; text-align: center" size=1 name=q21b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q21c></input>
+    Al<sub>2</sub>
+    O<sub>3</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(21,'Reactions of Oxygen',4,3,2,0,0,0,'Al + O<sub>2</sub>','Al<sub>2</sub>O<sub>3</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(21,'Reactions of Oxygen',4,3,2,0,0,0,'4 Al + 3 O<sub>2</sub>','2 Al<sub>2</sub>O<sub>3</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Zinc metal reacts with oxygen to form Zinc oxide powder which is yellow when hot and white when cold:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q22a></input>
+    Zn + <input style="font-size: 16px; text-align: center" size=1 name=q22b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q22c></input>
+    ZnO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(22,'Reactions of Oxygen',2,1,2,0,0,0,'Zn + O<sub>2</sub>','ZnO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(22,'Reactions of Oxygen',2,1,2,0,0,0,'2 Zn +  O<sub>2</sub>','2 ZnO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Iron metal reacts with oxygen to form  bluish black Iron(II,III) oxide(Tri Iron tetroxide):</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q23a></input>
+    Fe + <input style="font-size: 16px; text-align: center" size=1 name=q23b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q23c></input>
+    Fe<sub>3</sub>
+    O<sub>4</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(23,'Reactions of Oxygen',3,2,1,0,0,0,'Fe + O<sub>2</sub>','Fe<sub>3</sub>O<sub>4');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(23,'Reactions of Oxygen',3,2,1,0,0,0,'3 Fe + 2 O<sub>2</sub>','Fe<sub>3</sub>O<sub>4');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Lead metal reacts with oxygen to form Lead(II) oxide powder which is orange when hot and yellow when cold:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q24a></input>
+    Pb + <input style="font-size: 16px; text-align: center" size=1 name=q24b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q24c></input>
+    PbO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(24,'Reactions of Oxygen',2,1,2,0,0,0,'Pb + O<sub>2</sub>','PbO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(24,'Reactions of Oxygen',2,1,2,0,0,0,'2 Pb +  O<sub>2</sub>','2 PbO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Copper metal reacts with oxygen to form black Copper(II) oxide powder:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q25a></input>
+    Cu + <input style="font-size: 16px; text-align: center" size=1 name=q25b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q25c></input>
+    CuO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(25,'Reactions of Oxygen',2,1,2,0,0,0,'Cu + O<sub>2</sub>','CuO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(25,'Reactions of Oxygen',2,1,2,0,0,0,'2 Cu +  O<sub>2</sub>','2 CuO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>Heated Mercury metal reacts with oxygen to form red Mercury(II) oxide powder:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q26a></input>
+    Hg + <input style="font-size: 16px; text-align: center" size=1 name=q26b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q26c></input>
+    HgO
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(26,'Reactions of Oxygen',2,1,2,0,0,0,'Hg + O<sub>2</sub>','HgO');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(26,'Reactions of Oxygen',2,1,2,0,0,0,'2 Hg +  O<sub>2</sub>','2 HgO');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+</ul></ul>
+<ul>
+    <li>
+        <h4>With Compounds:</h4>
+    </li>
+    <ul>
+        <li>Carbon monoxide gas burns in Oxygen with a blue flame to form carbon dioxide gas:</li>
+        <p style="font-size:115%; text-align:center;">
+            <input style="font-size: 16px; text-align: center" size=1 name=q27a></input>
+            CO + <input style="font-size: 16px; text-align: center" size=1 name=q27b></input>
+            O<sub>2</sub>
+             &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q27c></input>
+            CO<sub>2</sub>
+        </p>
+        <p style="font-size:115%; text-align:center;">
+            <input onclick="check(27,'Reactions of Oxygen',2,1,2,0,0,0,'CO + O<sub>2</sub>','CO<sub>2</sub>');" type="button" value="Check answer"></input>
+            &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+            &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(27,'Reactions of Oxygen',2,1,2,0,0,0,'2 CO +  O<sub>2</sub>','2 CO<sub>2</sub>');" type="button" value="Show answer"></input>
+        </p>
+        <p></p>
+        <li>Nitrogen monoxide gas reacts with Oxygen to form reddish brown Nitrogen dioxide gas:</li>
+        <p style="font-size:115%; text-align:center;">
+            <input style="font-size: 16px; text-align: center" size=1 name=q28a></input>
+            NO + <input style="font-size: 16px; text-align: center" size=1 name=q28b></input>
+            O<sub>2</sub>
+             &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q28c></input>
+            NO<sub>2</sub>
+        </p>
+        <p style="font-size:115%; text-align:center;">
+            <input onclick="check(28,'Reactions of Oxygen',2,1,2,0,0,0,'NO + O<sub>2</sub>','NO<sub>2</sub>');" type="button" value="Check answer"></input>
+            &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+            &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(28,'Reactions of Oxygen',2,1,2,0,0,0,'2 NO +  O<sub>2</sub>','2 NO<sub>2</sub>');" type="button" value="Show answer"></input>
+        </p>
+        <p></p>
+        <li>
+            In the presence of Vanadium pentoxide(catalyst) at about 450<sup>o</sup>
+            C,Sulphur dioxide gas reacts with Oxygen to form Sulphur trioxide:
+        </li>
+        <p style="font-size:115%; text-align:center;">
+            <input style="font-size: 16px; text-align: center" size=1 name=q29a></input>
+            SO<sub>2</sub>
+            + <input style="font-size: 16px; text-align: center" size=1 name=q29b></input>
+            O<sub>2</sub>
+             &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q29c></input>
+            SO<sub>3</sub>
+</input></p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(29,'Reactions of Oxygen',2,1,2,0,0,0,'SO<sub>2</sub> + O<sub>2</sub>','SO<sub>3</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(29,'Reactions of Oxygen',2,1,2,0,0,0,'2 SO<sub>2</sub> +  O<sub>2</sub>','2 SO<sub>3</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When strongly heated in air, Zinc sulphide reacts with Oxygen to form Zinc oxide and Sulphur dioxide gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q30a></input>
+    ZnS + <input style="font-size: 16px; text-align: center" size=1 name=q30b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q30c></input>
+    ZnO + <input style="font-size: 16px; text-align: center" size=1 name=q30d></input>
+    SO<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(30,'Reactions of Oxygen',2,3,2,2,0,0,'ZnS + O<sub>2</sub>','ZnO + SO<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(30,'Reactions of Oxygen',2,3,2,2,0,0,'2 ZnS + 3 O<sub>2</sub>','2 ZnO + 2 SO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When strongly heated in air, Lead(II) sulphide reacts with Oxygen to form Lead(II) oxide and Sulphur dioxide gas:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q31a></input>
+    PbS + <input style="font-size: 16px; text-align: center" size=1 name=q31b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q31c></input>
+    PbO + <input style="font-size: 16px; text-align: center" size=1 name=q31d></input>
+    SO<sub>2</sub>
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(31,'Reactions of Oxygen',2,3,2,2,0,0,'PbS + O<sub>2</sub>','PbO + SO<sub>2</sub>');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show(31,'Reactions of Oxygen',2,3,2,2,0,0,'2 PbS + 3 O<sub>2</sub>','2 PbO + 2 SO<sub>2</sub>');" type="button" value="Show answer"></input>
+</p>
+<p></p>
+<li>When ignited, Methane burns in Oxygen to form Carbon dioxide and water:</li>
+<p style="font-size:115%; text-align:center;">
+    <input style="font-size: 16px; text-align: center" size=1 name=q32a></input>
+    CH<sub>4</sub>
+    + <input style="font-size: 16px; text-align: center" size=1 name=q32b></input>
+    O<sub>2</sub>
+     &#8594 <input style="font-size: 16px; text-align: center" size=1 name=q32c></input>
+    CO<sub>2</sub>
+    + <input style="font-size: 16px; text-align: center" size=1 name=q32d></input>
+    H<sub>2</sub>
+    O
+</p>
+<p style="font-size:115%; text-align:center;">
+    <input onclick="check(32,'Reactions of Oxygen',1,2,1,2,0,0,'CH<sub>4</sub> + O<sub>2</sub>','CO<sub>2</sub> + H<sub>2</sub>O');" type="button" value="Check answer"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input type="reset" value="Reset"></input>
+    &nbsp;&nbsp;&nbsp;&nbsp;<input onclick="show (32,'Reactions of Oxygen',1,2,1,2,0,0,'CH<sub>4</sub> + 2 O<sub>2</sub>','CO<sub>2</sub> + 2 H<sub>2</sub>O');" type="button" value="Show answer"></input>
+</p>
+</ul></ul></ul>
+<table align="center" width="100%" border="1">
+    <tr>
+        <td>
+            <a href="index.html">Home Page</a>
+        </td>
+        <td>
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+        </td>
+        <td>
+            <a href="assorted.html">Assorted Equations</a>
+        </td>
+        <td>
+            <a href="Hydrogen.html">Hydrogen</a>
+        </td>
+        <td>
+            <a href="Carbon Monoxide.html">Carbon Monoxide</a>
+        </td>
+        <td>
+            <a href="Carbon Dioxide.html">Carbon Dioxide</a>
+        </td>
+        <td>
+            <a href="Nitrogen.html">Nitrogen</a>
+        </td>
+        <td>
+            <a href="#top">TOP</a>
+        </td>
+    </tr>
+</table>
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