1. Types of Chemical Reactions

2. Main Ideas Synthesis Reactions Decomposition Reactions
Single Replacement Reactions
Double Replacement Reactions
Combustion Reactions
Signs of a chemical change (rxns)?
Gas release, temperature change, color change (by itself), light, precipitate (more shall be revealed!)
Note: We will do a demo of each…you might want to leave room to make notes of the demos!

3. element + element → compound
Synthesis Reaction
2 things combine to be 1 thing
A + B → AB
element + element → compound
Ex: Mg + O2 → MgO

4. 2. Decomposition Reaction
1 thing separates to become 2 things
AB → A + B
compound → element + element
Ex: H2O → H2 + O2 or
H2O2 catalyst H2O + O2

5. 3. Single Replacement/ Displacement Reaction
“Mean Girl Scenario”
A + BC → AC + B
element + compound → compound + element
Ex: Al + CuCl2 → AlCl3 + Cu
Any signs of chemical reactions?

6. 4. Double Replacement/ Displacement Reaction
AB + CD → AD + CB
compound + compound → compound + compound

7. 4. Double Replacement/ Displacement Reaction
AB + CD → AD + CB
compound + compound → compound + compound
Ex: Na2CO3 + CuSO4 → CuCO3 + Na2SO4
Note: Double Replacement reactions usually form a precipitate (a solid that is created by the reaction of two liquids)

8. carbon-hydrogen + oxygen → water + carbon dioxide
5. Combustion Reaction
Always produces water and carbon dioxide
CXHY + O2 → H2O + CO2
carbon-hydrogen + oxygen → water + carbon dioxide
Ex: CH4 + O2 → H2O + CO2 OR
C3H8 + O2 → H2O + CO2

9. The End 
Take this time to create a summary at the bottom of your notes and place it in your binder!