1. Chemical Reactions

2. “to produce” or “yield”
Chemical Equations
2 H2 (g) + O2 (g) H2O (l)
coefficient
Product(s)
Reactants
“Reactants with”
“to produce” or “yield”
State of matter

3. Interpretation 2 H2 + O2 → 2 H2O Two molecules One molecule 2 moles
2(2.02 g)
32.00 g
2 (18.02 g)
36.04 g reactants
36.04 g product

4. Evidence Temperature change Color change Odor Gas/bubbles
Appearance of a solid (precipitate)
**difference in composition before and after

5. Types of Reactions
Synthesis/combination
Decomposition  +

6. Combustion
Wax is made of carbon and hydrogen atoms bonded together in long chains. The chains are tangled, intertwined and packed together to make the wax.

7. Single-displacement
Double-displacement +  
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