1. DAILY QUESTION
October 31, 2008
Write down an example of a balanced chemical equation.

2. Agenda 10/31/08 Daily Question “Code Orange”
Turn in Daily Questions
“Code Orange”
Check-in: Lab Worksheet and 6-1 and 6-2 Worksheets
Ch 6 Sect 3 Notes
Balancing Chemical Equations
Assignments: 1. Balancing Chemical Equations Worksheet
due 11/3

3. Chemical Equation
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
CH4 + O2 → CO2 + H2O

4. Balanced Chemical Equations
The number of atoms of each element on the right hand side of the equation matches the number of the atoms of each element on the left side.
Standard way of writing equations
Follows the Law of Conservation of Mass

5. How-To Balance Chemical Equations
Leave the Subscripts alone!
Only put coefficients in front of the chemical formulas
Trial and Error Process

6. Practice Balancing Chemical Equations
CH4 + O2 → CO2 + H2O

7. Information from a Balanced Chemical Equation
Know the substances in the reaction
Know the amount involved