Question

by changing the conditions.
methods,
All in the blanks.
1. Physical changes are......... and can be.......... by changing the conditions.



.

2. Chemical changes cannot be reversed by simple........... methods.
3. A new product formed during a chemical change is completely different from original substance in respect of................. and properties.

4. Chemical changes involves either............. or........... of energy.
​

Answer 1

Answer:

1.Shape and size

2.physical

3.shape, size, color

4.heat, light

Answer 2

Explanation:

1. Physical changes are reversible and can be reversed by changing the conditions.

3. In respect of composition and properties

4.Chemical changes involves either gain or lose of energy.

Hope it helps!!