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Chemical combustion you see when something burns like in a fireplace.

Physical changes occur everywhere like when see an ice cube melting. The water is changing in its energy level but it's chemical composition is not changing.

If you mix salt into your water you are making a physical change not a chemical one...

Good luck. Try and understand the concept not just use peoples answers to your question for your homework.

Chemical changes in our daily life include -

1. Digestion of food - Our body chemically digests food using enzymes and breaks into particles which are easily absorbed

2.Rusting of Iron, Tarnishing of silver are chemical changes where they get oxidized in the presence of air

3. Spoilage of milk or food items are chemical changes

Physical Changes

1. Melting of Ice when temperature increases

2. Salt dissolving in water

3. Butter when kept at room temperature solidifies.