Physical and Chemical Changes

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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Rusting of iron is an example of a chemical change.

Front

What happens to the substance during a physical change?

Back

The substance remains the same, only its state or appearance changes.

Front

What happens to the substance during a chemical change?

Back

The substance transforms into one or more new substances with different properties.

Front

What is an example of a change of state?

Back

Freezing water into ice is an example of a change of state.

Front

What is the difference between boiling and stirring?

Back

Boiling is a physical change of state, while stirring is a physical action that does not change the substance's state.

Front

What indicates a chemical change has occurred?

Back

Indicators of a chemical change include color change, gas production, and the formation of a precipitate.

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into vapor, which is a physical change.