1. Types of Chemical Reactions

2. Parts of a chemical reaction Reactant- Products- Arrow- Coefficient- Subscript- Parentheses-

3. Synthesis A + B  AB OO C +  OO C

4. Decomposition AB  A + B  Cl Na Cl + Na  O Hg O OO +

5. Single displacement AB + C  AC + B  Zn Cl Cu + Cl Zn Cu +

6. Double displacement AB + CD  AD + CB S O  Mg Ca + O S Mg Ca +

7. Combustion Reaction Any time a substance burns a combustion reaction takes place. C 5 H 12 + O 2  CO 2 + H 2 O Is this an endothermic or exothermic reaction?

8. Heat/Energy in Reactions Endothermic Energy (heat) is absorbed by the reaction –What will the reaction “feel” like? –Can you think of any type of reaction that is endothermic? Exothermic Energy (heat) is released by the reaction –What will the reaction “feel” like? –Where does the energy (heat) come from? –Can you think of any type of reaction that is exothermic?