Chemical Reaction Practice Questions

__________________ the tiny pieces that all matter-all the stuff in the world- is made of.

• Atoms

• molecule

• substance

• property

The relative size of things.

• atom

• scale

• property

• substance

___________________ a process in which atoms rearrange to form new substances.

• atoms

• substance

• molecule

• chemical reaction

The temperature at which a substance changes from the liquid phase to the gas phase.

• chemical reaction

• boiling point

• melting point

• fertilizer

Letters and numbers showing the types and number of atoms that repeat to make up a substance.

• atoms

• boiling point

• chemical formula

• model

Able to cause damage.

• fertilizer

• melting point

• molecule

• corrosive

A substance that is added to soil to help plants grow

• molecule

• atom

• fertilizer

• substance

The temperature at which a substance changes from the solid phase to the liquid phase

• boiling point

• molecule

• melting point

• fertilizer

An object, diagram, or computer program that helps us understand something by making it simpler or easier to see

• atom

• substance

• model

• property

A group of atoms joined together in a particular way

• atoms

• substance

• molecule

• property