1. Chemistry Chapter 8 – Chemical Reactions
South Lake High School
Ms. Sanders

2. Chemical Reactions
Reactants Products
2H₂ + O₂ H₂O

3. Chemical Reactions Indications of a Chemical Reaction:
1) Releases energy in the form of heat and light
2) Production of a gas
3) Formation of a precipitate (solid from 2 liquids)
4) Color change

4. Chemical Reactions

5. Chemical Reactions
Symbols:
Yield
Reversible
Heat
Catalyst

6. Chemical Reactions Continue Symbols (s), (l), (g) – state of matter
(aq) – aqueous (dissolved in water)

7. Chemical Reactions Types of Chemical Reactions Synthesis: A + X BX
Decomposition: AX A + X
Single Displacement: A + BX AX + B
Double Displacement: AX + BY AY + BX
Combustion: CᵪHᵧ + O₂ CO₂ + H₂O

8. Balancing Equations
Need to have the same amount of atoms on both sides of the equation – law of conservation of mass
# atoms of reactants = # atoms of products
Use coefficients to balance the equation