Chemistry Unit 2

Physical Change
Chemical Change
Exothermic Reaction
Endothermic Reaction
Reactant
A starting substance in a reaction.
Product
A substance formed in a chemical reaction.
Synthesis
A reaction in which 2 or more substances combine to form one product.
Decomposition
Single Replacement
A reaction in which an element replaces a less reactive element in a compound.
Double Replacement
Polyatomic Ion
A covalently bonded group of atoms that have a net electric charge.
Analysis
A chemical reaction in which a compound is broken down (decomposed) into simpler substances.
Empirical Formula
Molecular Formula
Molecule
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