Review: Physical and Chemical Properties and Changes

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as flammability or reactivity.

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, density, or melting point.

Front

What is flammability?

Back

A chemical property that describes how easily a substance can catch fire and burn.

Front

What is density?

Back

A physical property defined as mass per unit volume, often used to identify substances.

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 cutting or melting.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting or souring of milk.

Front

Give an example of a physical property.

Back

Color, shape, size, mass, and boiling point are all examples of physical properties.

Front

Give an example of a chemical change.

Back

Milk turning sour is an example of a chemical change.

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 different substances with new chemical properties.