Name _________________________
Period ________
Chapter 3: Chemical Reactions
Chapter Review
Directions: Write the answer and the page number you found each answer.
1. What is a chemical reaction?
2. What is a chemical change? Give an example.
3. What is a physical change? Give an example.
4. What is a chemical formula? Give an example.
5. What is a chemical equation? Give an
example.
6. What are the four evidences of a chemical
reaction? Provide an example of each.
a.
b.
c.
d.
7. What is a synthesis reaction? Write an
example.
8. What is a decomposition reaction? Write an
example.
9. What is a combustion reaction? Write an
example.
10. What are three physical factors that can
be done to speed up a chemical reaction.
a.
b.
c.
11. What is a chemical factor that speeds up a
chemical reaction?
12.
What is a reactant?
13.
What is a product?
14. Copy this equation and circle the
reactants and square the product.
CH4 + 2O2  CO2 + 2H2O
15.
What is a subscript? Give an example of a
formula using a subscript.
16. What is a coefficient? Give an example of
an equation that uses a subscript.
17. Copy the equation and count the atoms.
Is it balanced?
18. Copy the following equation and balance
using a T-grid.
NH4 + NO3  N2O + H2O
19.
What is an endothermic reaction?
20.
Where is the energy located?
21.
What is an exothermic reaction?
22.
Where is the energy located?
23.
What is silicon used for in industry?
24.
What is respiration?