Question

properties of chemical change

for class 7th


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Answer 1

Answer:

A change in which the chemical properties of an object changes is called a chemical change.

In a chemical change no new substance get formed.

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Answer 2

Answer:

1. one or more substances are formed in a chemical change.

2. A chemical change is a permanent change.

3. a chemical change usually cannot be reversed.

4 . a lot of energy (in the form of heat, light etc) is either absorbed or given out in a chemical change.

5. sound may be produced in a chemical change.

6. a gas may be formed in a chemical change.