Physical and Chemical Changes in Matter

Front

What is a physical change?

Back

A physical change is a change in which the form or appearance of a substance changes, but its chemical composition remains the same. Examples include melting ice or breaking glass.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include frying eggs or burning wood.

Front

What happens to water when it freezes?

Back

When water freezes, it undergoes a physical change from a liquid to a solid at 0 °C.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 °C, where it changes from a liquid to a gas.

Front

What is the freezing point of water?

Back

The freezing point of water is 0 °C, where it changes from a liquid to a solid.

Front

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change because the glass remains the same substance.

Front

What is an example of a chemical change?

Back

Frying eggs is an example of a chemical change because it creates new substances.

Front

What is an example of a physical change?

Back

Melting ice cream is an example of a physical change because it changes state from solid to liquid without altering its chemical composition.

Front

What happens to water when it boils?

Back

When water boils, it undergoes a physical change from a liquid to a gas.

Front

What is the difference between melting and freezing?

Back

Melting is the process of a solid turning into a liquid, while freezing is the process of a liquid turning into a solid.