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Atoms & Chemical Reactions

Puzzle Type: Educational
Atoms & Chemical Reactions: Julie Hargrove
Across
A chemical reaction in which heat is released
Center of the atom
The law that states energy cannot be created nor destroyed
Process where one or more substances make one or more substances
Negatively charged particle
Positively charged particle
The number of protons in a nucleus
Down
A substance or molecule that participates in a chemical reaction
The law that states that states mass can not be created nor destroyed
The sum of the protons and neutrons in the nucleus of an atom
A combination of chemical symbols and numbers to represent a substance
A chemical reaction in which heat is absorbed
A substance or molecule that forms in a chemical reaction
Smallest particle into which an element can be divided