Question

Question 1: Write 10 balanced equation for each of the following reactions:

1. Combination reaction

2. Decomposition reaction

3. Displacement reaction

4. Double displacement reaction

5. Redox reaction

Question 2:

a) Write the formula of the salts given below:

Potassium Sulphate, copper sulphate ,calcium sulphate, magnesium sulphate,

sodium sulphate ,sodium chloride, sodium nitrate, sodium carbonate ,ammonium

chloride, potassium nitrate ,zincsulphate ,aluminiumchloride.



b)Identify the acids and bases from which the above salt may be obtained?


c) how many families can you identify among the salt given in this activity ?


d)which of these salts are acidic basic or neutral?​

Answer 1

1-magnesium oxide combining with carbon dioxide to produce magnesium carbonate.

MgO + CO2 → MgCO3

2-Thermal decomposition reaction

A thermal decomposition reaction can be defined as a decomposition reaction which is activated by thermal energy. In other words, a thermal decomposition reaction requires energy to be supplied to the reactants in the form of heat. Such reactions are generally endothermic since energy is required to break the chemical bonds and separate the constituent elements. A common example of a thermal decomposition reaction is provided below.

CaCO3 → CaO + CO2