1. Chemical equations
Reactions!!!!

2. Chemical equations What is a chemical symbol?
A symbol is a 1-3 letter representation of an atom of a single element.
How is it written?
The first letter is capitalized, the following letters are lower case (if they are there) C Na
Uun

3. Chemical equations What is a chemical formula?
A formula is a representation of a compound (bonds) using chemical symbols.
How is a formula written?
Each symbol represents one atom, and each subscript multiplies the atoms by that number.
NaCl
H2O

4. Chemical equations What is a chemical equation?
An equation is a representation of a chemical reaction with all compounds involved.

5. Chemical equations What are the parts to a chemical equation?
How is this equation read?

6. Chemical equations What is the law of conservation of mass?
This law states that under ordinary circumstances, matter can be neither created nor destroyed.
What does this mean for chemical equations?

7. Balancing chemical equations.
What is the first step to balancing an equation?
Make sure the equation is written correctly and always keep it the same.

8. Balancing chemical equations
What the second step in balancing a chemical equation?
Take an inventory of elements involved.
Count elements in reactants and count elements in products separately.

9. Balancing chemical equations
What is the final step in balancing a chemical equation?
Use coefficients to make the number of elements on each side equal.
You cannot change a chemical formula.