when matter undergoes a physical or a chemical change which of its properties I'd changed and which do not? explain the answer with the help of water as an example.
Answers
Answered by
3
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions. The "ingredients" of a reaction are called reactants, and the end results are called products.
Answered by
4
Answer:
physical changes ---the physical state will change and no change in chemical composition . (water when heated or cooled doesn't undergo any change in the chemical composition)
chemical chage ..... the colour... the smell .... formation of new substance .....evolution of gas (water when mixed with CaO produces Ca(OH)2 but when Ca(OH)2 is heated water is not produced .)
Similar questions