Question

Which best describes the difference between a physical change and a chemical change?

Answer 1

Answer:

•   The correct answer is B.

A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.

Physical properties:

Physical properties are those which have same composition. In other words, composition does not change, only state may be change like solid to liquid, liquid to gas, solid to liquid etc.

Example.

Water when freezes into ice, it is physical change, just state is change.

Chemical properties:

The chemical properties depend upon composition.

Example:

Formation of precipitates is an example of chemical change.