Physical and Chemical properties and 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 hardness.

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 burning wood.

Front

Give an example of a Physical Property.

Back

Boiling point, color, odor, or density.

Front

Give an example of a Chemical Property.

Back

Reactivity with oxygen, acidity, or toxicity.

Front

What happens during a Physical Change?

Back

The substance may change its form or appearance, but its chemical identity remains the same.

Front

What happens during a Chemical Change?

Back

The original substances are transformed into one or more new substances with different properties.

Front

Is melting ice a Physical Change or a Chemical Change?

Back

Melting ice is a Physical Change.

Front

Is the explosion of fireworks a Physical Change or a Chemical Change?

Back

The explosion of fireworks is a Chemical Change.