Review Chapter 3: Molecules Meet

Reactions happen ________. (at home / everywhere / at school)

Two molecules meet and trade atoms. As a result, two ________ are made. (atoms / paths / molecules)

In a chemical reaction atoms rearrange but are never ________ (wasted / created / imagined) or ________ (written / talked / destroyed).

Give example reactions happen everywhere.

Mention three examples of chemical reactions!

When atoms hooks another atom they follow rules, so does ________ (reactions / pictures / answers) have to follow rules.

Atoms can switch ________ (seats / places / faces), join together or ________ (separate / disappear / close) from each other.

Sometimes when one molecule meets another molecule it _________ . (sits / reads / reacts)

When atoms get rearranged a ________ has occurred. (signal / chemical reaction / material)