Question

Differentiate between the following -give 3 points to each Physical and chemical change​

Answer 1

Answer:

A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

Answer 2

Physical change

1- Physical change is a temporary change.

2-A physical change involves very little to no absorption of energy.

3-In a physical change, no new substance is formed.

4-Generally, physical changes do not involve the production of energy.

Chemical change​

1-A chemical change is a permanent change.

2-During a chemical reaction, absorption and evolution of energy take place.

3-A chemical change is always accompanied by one or more new substance.

4-Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.)