Question

9. Answer the following questions in brief.
1. Define the following terms.
(a) Reversible change
(b) Chemical change
(c) Physical change​

Answer 1

Answer:

pls mark me as brainliest please

Explanation:

a)A reversible change is a chemical change where no new materials are created and the original materialcan be recovered. Examples include freezing water to make ice or melting chocolate

b)A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance (synthesis or either decomposes to form more substances)

c)Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. ... Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density

Answer 2

Answer:

1. A reversible change is a change that can be undone or reversed. If you can get back the substances you started the reaction with, that's a reversible reaction. ... Examples of reversible reactions include dissolving, evaporation, melting and Freezing
2. Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
3. Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. ... Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
4. l hope it's helpful please follow m