Matter Matters

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity.

Front

List three examples of physical properties.

Back

Color, taste, and boiling point.

Front

What happens to water when heat energy is added?

Back

Water can change from a liquid to a gas (steam) when heat energy is added.

Front

How can physical properties be observed?

Back

Physical properties can be observed using the senses, such as sight, taste, and touch.

Front

What is the difference between physical and chemical properties?

Back

Physical properties can be observed without changing the substance, while chemical properties describe how a substance interacts with other substances.

Front

What is an example of a change in physical state?

Back

Melting of ice to water or boiling of water to steam.

Front

What is the significance of measuring physical properties?

Back

Measuring physical properties helps in identifying substances and understanding their behavior under different conditions.

Front

Can physical properties change? Give an example.

Back

Yes, physical properties can change. For example, the color of a leaf can change in autumn.

Front

What is meant by 'phase change'?

Back

A phase change is a transition of matter from one state to another, such as solid to liquid or liquid to gas.

Front

What are intensive and extensive properties?

Back

Intensive properties do not depend on the amount of substance (e.g., density), while extensive properties do depend on the amount (e.g., mass and volume).