Quiz Friday!

We have a Quiz this Friday the 21st. The quiz will cover Counting Atoms, Balancing Chemical Equations and Types of Chemical Reactions.

Counting Atoms: Al2O3 ---> Al + O2

On the reactant side we have 2 Al atoms and 3 O atoms. On the product side we have 1 Al atom and 2 O atoms. This reaction is not "balanced". Which means the number of Al and O atoms are equal on both sides of the reaction.

Steps to Balance:

1. Draw Line
2. Count Atoms
3. Add Prefix Numbers

The reaction is now balanced but the individual steps haven't been shown:

2Al2O3 ---> 4Al + 3O2

Types of Reactions:

1. Synthesis
2. Decomposition
3. Single Replacement
4. Double Replacement

Study hard, Ask if you have any questions and good luck!