Physical and Chemical Properties and Changes

Front

What is a physical change?

Back

A change in the size, shape, or state of matter without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of one or more new substances with different chemical properties.

Front

What is evidence of a chemical change?

Back

The formation of gas bubbles, color change, temperature change, or the formation of a precipitate.

Front

What happens to the chemical properties during a chemical change?

Back

The chemical properties change.

Front

Is a new substance formed in a physical change?

Back

False, a new substance is not formed in a physical change.

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, odor, or melting point.

Front

What is a chemical property?

Back

A characteristic that can only be observed during a chemical reaction, such as reactivity with acid or flammability.

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What is an example of a physical change?

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Melting ice into water.

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What is an example of a chemical change?

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Burning wood, which produces ash and smoke.

Front

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

Back

A physical change does not alter the substance's chemical composition, while a chemical change does.