Mastery Check - Properties of Matter

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often accompanied by energy changes, such as Alka-Seltzer giving off carbon dioxide when added to water.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to undergo a specific chemical change, such as the ability to rust.

Front

Give an example of a chemical property of water.

Back

Reacts with pure sodium.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as salt dissolving in water.

Front

What is the difference between physical and chemical properties?

Back

Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.

Front

What happens during a chemical change?

Back

The original substances are transformed into different substances with new properties.

Front

What is an example of a physical change?

Back

Melting ice into water.

Front

What is the significance of observing physical properties?

Back

They help identify and classify substances based on their characteristics.

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.