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, density, and melting point.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability and reactivity.

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.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rust forming on iron.

Front

Give an example of a physical property.

Back

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

Front

Give an example of a chemical property.

Back

Flammability, acidity, and reactivity with water are examples of chemical properties.

Front

What happens during a physical change?

Back

The substance may change its form or appearance, but its chemical composition 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 dissolving sugar in water a physical or chemical change?

Back

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

Front

Is burning wood a physical or chemical change?

Back

It is a chemical change because it produces ash, smoke, and gases, changing the wood into different substances.