1. Reactions
Types of reactions: Precipitate, Corrosion, Metal Displacement, Combustion,
Decomposition, Combination, Redox, Acid and base.
Questions:
1. What is a precipitate?
2. Write an equation for the reaction between salt, copper sulphate, dissolving in water.
3. Which two of the following compounds will be soluble in water?
a. NaNO3
b. PbI2
c. KI
d. Zn(OH)2
4. Which of the following compounds will be insoluble in water?
a. CuCO3
b. NaCl
c. AgI
d. Mg(OH)2
5. Write down the possible combinations of ions when the following solutions are mixed
together.
a. Sodium Chloride and Copper Sulphate
b. Sodium Hydroxide and Copper Sulphate
c. Lead Nitrate and Sodium Hydroxide
d. Potassium Iodide and Sodium Carbonate
6. Construct a table like the one below and use it to describe each group of reaction discussed
in this section. List some examples.
REACTION TYPE DESCRIPTION EXAMPLE
Precipitate
Corrosion
Metal Displacement
Decomposition
Redox
Acid/Base
7. What is oxidation?
8. What is Reduction?
9. Write a balanced equation for the following reactions
a. Copper Metal + Zinc Sulphate  Zinc Metal + Copper Sulphate
b. Sodium Metal + Oxygen gas  Solid sodium oxide
c. Hydrogen Peroxide (H2O2) solution decomposes to form Hydrogen and Oxygen gases
10. What is an exothermic and an endothermic reaction?
11. Explain why it is said a reaction between magnesium and oxygen is four reaction in one: a
combustion reaction, a combination reaction, a redox reaction and a exothermic reaction.

2. 12. Using the acid/base reaction complete the following:
a. Hydrochloric Acid + Aluminium Hydroxide  ________________ + __________________
b. Hydrochloric Acid + Magnesium Hydroxide  ________________ + __________________
c. Nitric Acid + Lithium Hydroxide  __________________ + ________________
13. Name the salts that would form between the following:
a. Magnesium Hydroxide and Hydrochloric acid
b. Potassium Hydroxide and Acetic acid
c. Sodium Carbonate and Sulphuric acid
Assessment:
Complete the questions above to the best of your understanding with the use of some research and
the examples on the white board.
A = 12-13 questions correct
B = 8-11 questions correct
C = 6-7 questions correct
D = < 5 questions correct
Due Date:
26th April