Question

A) What Is Physical Change?Give Example. B) What Is Chemical Change?Give Example​

Answer 1

Answer:

A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

Answer 2

Answer:

Physical Change: Properties like size, shape, state (solid, liquid or gas), temperature, pressure etc., are physical properties. Those changes in which only physical properties of a substance changes are called physical changes. For example, lightening of bulb is a physical change.

Chemical Change: The change in which new substance is formed and chemical composition of a substance is changed is called a chemical change. A substance loses its identity in a chemical change and cannot be get back into its original form. For example, burning of candle, formation of curd etc.

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