Name:
Advanced Physical Science Chemical Reactions Review
Part 1 Write out and balance the following Equations:
Equation A: Hydrogen reacts with oxygen to produce water
-----------------------------------------------------------------------------------------------Equation B: Sodium sulfate and calcium chloride produce calcium sulfate and sodium chloride
-------------------------------------------------------------------------------------------------Equation C: Water reacts with iron to produce iron (III) oxide and hydrogen.
--------------------------------------------------------------------------------------------------Equation D: Aluminum chlorate breaks down into aluminum chloride and oxygen.
-------------------------------------------------------------------------------------------------------------------------------------Answer the following questions about Equations A, B C & D.
1. __________ Which equation best represents a decomposition reaction?
2. __________ Which equation best represents a double replacement reaction?
3. __________Which equation best represents a single replacement reaction?
4. __________Which equation best represents a synthesis reaction?
Part 2: Answer the following questions.
5. In an exothermic reaction, energy is transferred from:
a) the reaction to the surroundings.
b) the surroundings to the reaction
c) one reactant to another
d) the container to the chemicals
6.
Hydrogen peroxide rapidly breaking down in the presence of another compound is an example of the effect of
_________ on reaction rate.
a) catalysts
b) concentration
c) temperature
d) surface area
7. The Law of Conservation of Mass states thata) chemical reactions finish with the same number of compounds that they started with.
b) chemical reactions finish with the same number of atoms they started with.
c) uneven numbers of atoms will not react.
d) mass is lost if a gas is formed during a chemical reaction
8. An endothermic reaction might:
a) feel cooler
b) feel warmer
c) show no change in temperature
9. Two substances are mixed in a beaker and bubbles form. A burning splint inserted into the beaker goes out.
What common gas was produced in the reaction?
a) carbon dioxide
c) hydroxyl
e) oxygen
b) hydrogen
d) octane
10. The rapid combustion of ethanol is an example of the effect of ________ on reaction rate.
a) catalysts
b) concentration
c) temperature
d) surface area
Part 3: Use the formula shown on this page to answer questions 1-5.
KOH + HNO3  H2O + KNO3
11. Draw a circle around each of the formulas of the reactants.
12. Draw a square around each of the formulas of the products.
13. Write the formulas of the products in the squares (one formula per square).
Calculate the formula mass for each product.
Product
Product
Number of
atoms
Element
Total
Mass
Number
Total for
Element
Number of
atoms
Element
Total
14. What is the total formula mass of the products? __________________
15. What is the total formula mass of the reactants? __________________
Mass
Number
Total for
Element