1. Synthesis and decomposition reactions

2. Learning goals
We are learning to identify synthesis and decomposition reactions.
We are learning to predict the products of synthesis and decomposition reactions.

3. Types of Chemical Reactions
Most chemical reactions fall into the five families of reactions that we will be studying in our course:
Synthesis
Decomposition
Single Displacement
Double Displacement
Combustion
Today we will focus on the first two: synthesis & decomposition reactions.

4. Synthesis Reactions A + B AB Have the skeleton form:
Two or more reactants combine to form a single product.
A + B AB

5. Synthesis Rules 1. Metal + O2 Metal Oxide 2. Metal Oxide + H2O
Two rules to follow for specific synthesis reactions:
Examples:
1. Metal + O2
Metal Oxide
2. Metal Oxide + H2O
Metal Hydroxide
2 Ca + O2
2 CaO
Na2O + H2O
2 NaOH

6. Decomposition Reactions
Have the skeleton form:
A single reactant decomposes to form two or more products. AB
A + B

7. Decomposition Rules 1. Metal Oxide Metal + O2 2. Metal Hydroxide
Three rules to follow for specific decomposition reactions:
Example:
1. Metal Oxide
Metal + O2
2. Metal Hydroxide
Metal Oxide + H2O
3. Metal Carbonate
Metal Oxide + CO2
Calcium Carbonate
Calcium Oxide + CO2

8. Example #1 Aluminium + Oxygen
Given the reactants of the synthesis reaction below determine
The complete word equation
The balanced chemical equation
Aluminium + Oxygen

9. Example #2 Iron (III) Carbonate
Given the reactant of the decomposition reaction below determine
The complete word equation
The balanced chemical equation
Iron (III) Carbonate

10. Learning goals
We are learning to identify synthesis and decomposition reactions.
We are learning to predict the products of synthesis and decomposition reactions.

11. Homework
P.239 #1-4