Chemical Magic Unit Review

What do fireworks, rubber, and Silly Putty have in common?

• All are made through a physical reaction.

• All are made through a physical change.

• All are made through a chemical reaction.

• All are made using the same substances.

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An example of an acid that is NOT dangerous is ___.

• bleach

• lemon juice

• sulfuric acid

• ammonia

Why is this unit called "Chemical Magic"?

• Because it's about physical change.

• Because a magician wrote it.

• Because chemical reactions can seem like magic.

• Because all chemicals are magical.

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NGSS.MS-PS1-5

A group of substances that are very reactive, taste sour, can dissolve metals, and cause a burning feeling.

• acids

• bases

• chemicals

• substances

Members of a historic group of people who mixed together different substances, with the hope of becoming rich.

• scientists

• chemists

• professors

• alchemists

Any substance that can react with some other substance.

• acid

• base

• chemical

• property

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Any trait of a substance, such as its color.

• physical

• chemical

• solution

• property

Occurs when two or more substances are mixed together and result in a new substance.

• chemical action

• chemical reaction

• physical action

• physical reaction

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When the properties of substances don't change.

• chemical change

• chemical reaction

• physical change

• physical reaction

Has no definite shape OR volume.

• solid

• liquid

• gas

• cube

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