1. Chemical Reactions

2. Molecule- two or more atoms joined together chemically.
Compound- molecule that contains at least two different elements.
Molecule:
Compound: CO2

3. Reactants- starting substances in a chemical reaction
Products- substances formed from after a chemical reaction.
Reactants: C + O2
Products: CO2

4. Sodium bicarbonate and acetic acid react to form sodium acetate, water, and carbon dioxide. NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O + CO2

5. Synthesis A + B  AB Two or more elements or compounds combine.
Example: C + O2 
CO2 O C +  O C

6. Decomposition
AB  A + B
A compound breaks apart into simpler substances.
Example: NaCl  Na + Cl  Cl Na Cl + Na

7. Displacement AB + C  AC + B
One element trades places with another element.
Zn + CuCl2  Zn Cl Cu + Cl Zn Cu +