Chemical Changes

Front

What is a chemical change?

Back

A chemical change occurs when atoms link together in new ways to create a substance different from the original substances.

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.

Front

What are indicators of a chemical reaction?

Back

Indicators of a chemical reaction include the formation of gas bubbles, change in color, and odor.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed at the end of a chemical reaction.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that describes its ability to undergo a specific chemical change.

Front

Give an example of a chemical property of water.

Back

The ability of water to react with sodium is an example of a chemical property.

Front

What happens during a chemical change?

Back

During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in new substances.

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What is the difference between a chemical change and a physical change?

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A chemical change results in the formation of new substances, while a physical change does not change the chemical composition of the substance.

Front

What is an example of a physical change?

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Chopping a piece of wood is an example of a physical change.