Chemical Reactions Quiz

Explosions are always dangerous.

• True

• False

Explosions are always used to destroy things.

• True

• False

Explosions are caused when gas is produced.

• True

• False

How can you make a dull penny shiny again?

• Leave it in salt water

• Wash it with soapy water

• Dip it in vinegar and salt

When you left the steel nail and copper pennies in a bag of vinegar and salt, the nail turned copper-colored. What happened?

• The nail was transformed from steel into copper.

• The nail was covered with a thin layer of copper.

• A steel layer was removed from the nail, showing copper underneath.

A ____ is any substance that can react with some other substance.

• acids

• alchemist

• chemical

• property

• chemical reaction

A ____ is any trait of a substance, such as its solidness, its color, how it feels, and so on.

• acids

• alchemist

• chemical

• property

• chemical reaction

A ____ occurs when two or more substances are mixed together and result in a new substance.

• acids

• alchemist

• chemical

• property

• chemical reaction

An ____ is a member of a historical group of people who mixed together different substances, with the hope of becoming rich.

• acids

• alchemist

• chemical

• property

• chemical reaction

_____ are a group of substances that are very reactive and have in common the fact that they taste sour, can dissolve metals, cause a burning feeling, and so on.

• acids

• alchemist

• chemical

• property

• chemical reaction