Interpretation Introduction Interpretation: In a chemical change, the four indicators that occurred needs to be explained. Concept introduction: The nature of any substance is explained by their chemical properties and physical properties. A chemical property describes how a substance reacts with other substances. Answer There are four indicators of chemical change which are mentioned below: Production of gas Releasing energy or gain of energy Color change Formation of precipitation Explanation The main four indicators for a chemical change with an example are mentioned below: Production of gas: In a chemical change, a new gas will be produced. For example, Sodium ignites when reacting with water. Sodium is metal, when this metal reacts with water, a new substance hydroxide is formed and hydrogen gas released. Releasing of energy or gain of energy: In a chemical change, a substance will release or gain energy. For example, burning of wood, where the heat losses by the production of ash and gases. Color change: In a chemical change, a substance will be changing its color. For example, changing in the color of leaves fall, this is a biochemical change where the composition of leaves is changing and completely destroyed. Irreversible change: In a chemical change, reaction will be irreversible. For example, Iron rusting, when the iron reacts with moisture iron oxide will be formed which cannot be converted into iron. Conclusion In a chemical reaction these four indicators are helpful for identification of different compounds.

1st Edition

ISBN: 9780078746376

Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher: Glencoe/McGraw-Hill School Pub Co

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Textbook Question

Chapter 3, Problem 46A

List four indicators that a chemical change has probably occured.

Expert Solution & Answer

Interpretation Introduction

Interpretation:

In a chemical change, the four indicators that occurred needs to be explained.

Concept introduction:

The nature of any substance is explained by their chemical properties and physical properties. A chemical property describes how a substance reacts with other substances.

Answer to Problem 46A

There are four indicators of chemical change which are mentioned below:

Production of gas
Releasing energy or gain of energy
Color change
Formation of precipitation

Explanation of Solution

The main four indicators for a chemical change with an example are mentioned below:

Production of gas: In a chemical change, a new gas will be produced. For example, Sodium ignites when reacting with water. Sodium is metal, when this metal reacts with water, a new substance hydroxide is formed and hydrogen gas released.
Releasing of energy or gain of energy: In a chemical change, a substance will release or gain energy. For example, burning of wood, where the heat losses by the production of ash and gases.
Color change: In a chemical change, a substance will be changing its color. For example, changing in the color of leaves fall, this is a biochemical change where the composition of leaves is changing and completely destroyed.
Irreversible change: In a chemical change, reaction will be irreversible. For example, Iron rusting, when the iron reacts with moisture iron oxide will be formed which cannot be converted into iron.

Conclusion

In a chemical reaction these four indicators are helpful for identification of different compounds.

Chapter 3, Problem 45A

Chapter 3, Problem 47A

Chapter 3 Solutions

Chemistry: Matter and Change

Ch. 3.1 - Prob. 1SSC Ch. 3.1 - Prob. 2SSC Ch. 3.1 - Prob. 3SSC Ch. 3.1 - Prob. 4SSC Ch. 3.2 - Prob. 5PP Ch. 3.2 - Prob. 6PP Ch. 3.2 - Prob. 7PP Ch. 3.2 - Prob. 8PP Ch. 3.2 - Prob. 9PP Ch. 3.2 - Prob. 10SSC

Ch. 3.2 - Prob. 11SSC Ch. 3.2 - Prob. 12SSC Ch. 3.2 - Prob. 13SSC Ch. 3.2 - Prob. 14SSC Ch. 3.3 - Prob. 15SSC Ch. 3.3 - Prob. 16SSC Ch. 3.3 - Prob. 17SSC Ch. 3.3 - Prob. 18SSC Ch. 3.4 - Prob. 19PP Ch. 3.4 - Prob. 20PP Ch. 3.4 - Prob. 21PP Ch. 3.4 - Prob. 22PP Ch. 3.4 - Prob. 23PP Ch. 3.4 - Prob. 24SSC Ch. 3.4 - Prob. 25SSC Ch. 3.4 - Prob. 26SSC Ch. 3.4 - Prob. 27SSC Ch. 3.4 - Prob. 28SSC Ch. 3.4 - Prob. 29SSC Ch. 3.4 - Prob. 30SSC Ch. 3 - Prob. 31A Ch. 3 - Prob. 32A Ch. 3 - Prob. 33A Ch. 3 - Prob. 34A Ch. 3 - Prob. 35A Ch. 3 - Prob. 36A Ch. 3 - Prob. 37A Ch. 3 - Prob. 38A Ch. 3 - Prob. 39A Ch. 3 - Prob. 40A Ch. 3 - Prob. 41A Ch. 3 - Prob. 42A Ch. 3 - Prob. 43A Ch. 3 - Prob. 44A Ch. 3 - Prob. 45A Ch. 3 - List four indicators that a chemical change has...Ch. 3 - Rust Iron and oxygen combine to form iron oxide,...Ch. 3 - Burning Candle After burning for three hours, a...Ch. 3 - Prob. 49A Ch. 3 - Ammonia Production A 28.0-g sample of nitrogen gas...Ch. 3 - Prob. 51A Ch. 3 - Prob. 52A Ch. 3 - Prob. 53A Ch. 3 - Prob. 54A Ch. 3 - Prob. 55A Ch. 3 - Prob. 56A Ch. 3 - Prob. 57A Ch. 3 - Prob. 58A Ch. 3 - Prob. 59A Ch. 3 - Which of the following are the same and which are...Ch. 3 - Describe how a homogeneous mixture differs from a...Ch. 3 - Seawater is composed of salt, sand, and water. Is...Ch. 3 - Iced Tea Use iced tea with and without ice cubes...Ch. 3 - Prob. 64A Ch. 3 - Prob. 65A Ch. 3 - Prob. 66A Ch. 3 - Prob. 67A Ch. 3 - Prob. 68A Ch. 3 - Prob. 69A Ch. 3 - Prob. 70A Ch. 3 - Prob. 71A Ch. 3 - Prob. 72A Ch. 3 - Prob. 73A Ch. 3 - Prob. 74A Ch. 3 - Prob. 75A Ch. 3 - Prob. 76A Ch. 3 - Prob. 77A Ch. 3 - Prob. 78A Ch. 3 - Prob. 79A Ch. 3 - Prob. 80A Ch. 3 - Prob. 81A Ch. 3 - Prob. 82A Ch. 3 - Prob. 83A Ch. 3 - Prob. 84A Ch. 3 - Prob. 85A Ch. 3 - Prob. 86A Ch. 3 - Prob. 87A Ch. 3 - Prob. 88A Ch. 3 - Prob. 89A Ch. 3 - Prob. 90A Ch. 3 - Prob. 91A Ch. 3 - Prob. 92A Ch. 3 - Prob. 93A Ch. 3 - Prob. 94A Ch. 3 - Prob. 95A Ch. 3 - Prob. 96A Ch. 3 - Prob. 97A Ch. 3 - Prob. 98A Ch. 3 - Prob. 99A Ch. 3 - Prob. 100A Ch. 3 - Prob. 101A Ch. 3 - Prob. 102A Ch. 3 - Prob. 103A Ch. 3 - Prob. 105A Ch. 3 - Prob. 106A Ch. 3 - Prob. 107A Ch. 3 - Prob. 1STP Ch. 3 - Prob. 2STP Ch. 3 - Prob. 3STP Ch. 3 - Prob. 4STP Ch. 3 - Prob. 5STP Ch. 3 - Prob. 6STP Ch. 3 - Prob. 7STP Ch. 3 - Prob. 8STP Ch. 3 - Prob. 9STP Ch. 3 - Prob. 10STP Ch. 3 - Prob. 11STP Ch. 3 - Prob. 12STP Ch. 3 - Prob. 13STP Ch. 3 - Prob. 14STP Ch. 3 - Prob. 15STP Ch. 3 - Prob. 16STP Ch. 3 - Prob. 17STP Ch. 3 - Prob. 18STP Ch. 3 - Prob. 19STP

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