Chemical and Physical 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, mass, and state.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to undergo a specific chemical change, such as reactivity with oxygen or flammability.

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 or boiling.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting of iron or burning of wood.

Front

Give an example of a physical property of water.

Back

Water is colorless and has a boiling point of 100°C.

Front

Give an example of a chemical property of iron.

Back

Iron can rust when exposed to moisture and oxygen.

Front

What happens to the mass of a substance during a physical change?

Back

The mass remains the same during a physical change.

Front

What happens to the mass of a substance during a chemical change?

Back

The mass is conserved, but the substances may change into different forms.

Front

Is dissolving sugar in water a physical or chemical change?

Back

It is a physical change because the sugar can be recovered.

Front

Is burning wood a physical or chemical change?

Back

It is a chemical change because new substances (ash, smoke) are formed.