1. Types of Chemical Reactions

2. Reactants Products Pb(NO 3 ) 2 + 2KI PbI 2 + 2KNO 3

3. In a chemical reaction, matter is not created or destroyed but it is conserved.

4. Synthesis Reactions 2 or more substances combine to form another substance. A + B AB

5. Synthesis Reaction (Combination)

6. Decomposition Reactions One substance breaks down or decomposes into 2 or more simpler substances. ABA + B

7. Decomposition Reaction (Break Down)

8. Single Displacement Reactions One element replaces another in a compound. A + BCAC + B

9. Single Displacement Reaction (1-2 Switch)

10. Double Displacement Reactions When 2 ionic compounds are combined in a solution, a precipitate, water or gas is formed. AB + CDAC + BD

11. Double Replacement Reaction (The Swingers)

12. Combustion Reaction A reaction in which a compound and oxygen burn. Uses oxygen as a reactant. At least one product of the reaction contains oxygen. 2CH 4 + 4O 2 2CO 2 + 4H 2 O

13. Exothermic Vs. Endothermic  Energy is given off.  Heat may be given off  Container may feel hot ¤ Energy is taken in for the reaction to take place. ¤ Heat may be absorbed ¤ Container may feel cold.