Question

In ___________ , the properties of molecules remain same even after the change.

• A. physical change
• B. chemical change
• C. biochemical change
• D. photochemical change

Answer 1

Answer: (A)

physical change

A physical change is any change in matter that involves the substance going from one physical state to another.

The reference to a physical state involves solids, liquids, and gases. When a substance undergoes a physical change it does not lose its original properties because no new formation takes place when changing from one phase to another. The types of physical changes can vary. A substance can go from a solid to a liquid, a liquid to a gas, a gas to a liquid, a liquid to a solid, a solid to a gas, or a gas to a solid.