Chemical and Physical Changes

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, boiling point, or melting point.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability or reactivity with acids.

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 melting ice or boiling water.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting iron or baking a cake.

Front

What happens to water when it boils?

Back

It undergoes a physical change from liquid to gas (steam) without changing its chemical composition.

Front

What is an example of a physical change?

Back

Melting ice into water.

Front

What is an example of a chemical change?

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Baking a cake, where the batter transforms into a new substance.

Front

What is the boiling point of water?

Back

The temperature at which water changes from liquid to gas, typically 100°C at sea level.

Front

What occurs when an ice cube melts?

Back

It undergoes a physical change from solid to liquid.

Front

What is the difference between a physical change and a chemical change?

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A physical change does not alter the substance's chemical identity, while a chemical change results in new substances being formed.