Physical & Chemical 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.

Front

What is a Chemical Change?

Back

A Chemical Change is a process where one or more substances are transformed into new substances with different properties.

Front

What happens to atoms during a Chemical Change?

Back

Atoms are rearranged to form new substances during a Chemical Change.

Front

What is a clue that indicates a Chemical Change has occurred?

Back

Clues include change in color, production of energy, formation of gas, and formation of a precipitate.

Front

What is a Precipitate?

Back

A Precipitate is a solid that forms when two liquids react together.

Front

Give an example of a Physical Change.

Back

An example of a Physical Change is a glass falling and shattering on the floor.

Front

What is an indicator of a Chemical Change?

Back

Indicators of a Chemical Change include change in color, release of energy, and formation of gas.

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What is the difference between Physical and Chemical Changes?

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Physical Changes do not change the substance's chemical identity, while Chemical Changes do.

Front

What is an example of a Chemical Change?

Back

An example of a Chemical Change is baking a cake.

Front

What does it mean when a substance undergoes a change in shape?

Back

A change in shape is typically a Physical Change and does not indicate a Chemical Change.