Physical and Chemical Changes in Matter

Front

What is a chemical change?

Back

A chemical change is a process where one or more new substances are formed, often involving a reaction between different substances.

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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.

Front

Example of a chemical change: Baking soda and vinegar combine to make carbon dioxide.

Back

This is a chemical change because new substances are formed.

Front

Example of a physical change: Ice melting.

Back

This is a physical change because the ice changes state from solid to liquid without changing its chemical structure.

Front

What happens during boiling water?

Back

Boiling water is a physical change as it changes from liquid to gas (steam) without altering its chemical composition.

Front

What is an example of a chemical change involving color change?

Back

A copper roof changing color is a chemical change due to the reaction of copper with oxygen.

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 physical change in everyday life?

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Examples include melting ice, dissolving sugar in water, or breaking a glass.

Front

What is an example of a chemical change in cooking?

Back

Baking a cake is a chemical change because new substances are formed during the process.

Front

What is rusting?

Back

Rusting is a chemical change where iron reacts with oxygen and moisture to form rust (iron oxide).