Physical and Chemical Properties and Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It often involves a reaction that produces heat, light, or gas.

Front

Give an example of a physical change.

Back

An example of a physical change is honey dissolving in tea.

Front

What happens during a chemical change?

Back

During a chemical change, the original substances are transformed into new substances with different properties.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not create new substances, while chemical changes do.

Front

What is an example of a chemical change?

Back

An example of a chemical change is sugar and oxygen reacting to produce water and carbon dioxide.

Front

What occurs when ice melts?

Back

When ice melts, it undergoes a physical change from solid to liquid.

Front

True or False: Some physical changes involve chemical reactions.

Back

False. Physical changes do not involve chemical reactions.

Front

What is meant by 'substance change'?

Back

Substance change refers to a change that alters the chemical composition of a substance, resulting in a new substance.

Front

What is an example of a physical property?

Back

An example of a physical property is the color, shape, or size of a substance.