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CHEMISTRY FORM 2
1. STRUCTURE OF THE ATOM, AND THE PERIODIC TABLE
- 1.1 Structure of the atom
- 1.2 Atomic Number and Mass Number
- 1.3 Isotopes
- 1.4 Energy levels and electron arrangement
- 1.5 Development of the Periodic Table
- 1.6 Relative Atomic Mass and Isotopes
- 1.7 Ion Formation
- 1.8 Chemical Formulae
- 1.9 Chemical Equations
2. CHEMICAL FAMILIES AND PATTERNS IN PROPERTIES
- 2.1 Alkali metals (Group I elements)
- 2.2 Alkali Earth Metals (Group II elements)
- 2.3 Halogens (Group VII elements)
- 2.4 Noble gases (Group VIII elements)
- 2.5 Properties and Trends Across the Periodic Table
3. CHEMICAL BONDING AND STRUCTURE
- 3.1 Bond
- 3.2 Ionic bond
- 3.3 Giant ionic structure
- 3.4 Covalent bond
- 3.5 Co-ordinate bond
- 3.6 Molecular structures
- 3.7 Giant covalent structures
- 3.8 Metallic Bond
- 3.9 Types of bond across a period
- 3.10 Oxides of elements in Period 3
- 3.11 Chlorides of Period 3 elements
4. SALTS
- 4.1 What is a salt?
- 4.2 Types of salt
- 4.3 Solubility of salts in water
- 4.4 Methods of preparing salts
- 4.4.1 Reacting a Metal with an Acid
- 4.4.2 Reacting an Acid with a Base (Neutralization)
- 4.4.3 Reacting an Acid with a Carbonate (or hydrogencarbonate of metal)
- 4.4.4 Combining elements Directly (Direct Combination of elements)
- 4.4.5 Precipitation (Double decomposition)
- 4.5 Action of heat on salts
- 4.6 Uses of salts
5. EFFECT OF AN ELECTRIC CURRENT ON SUBSTANCES
- 5.1 Electrical conduction
- 5.2 Electrical conductivity of molten substances
- 5.3 Electrical conductivity of substances in aqueous state
- 5.4 Electrolysis
- 5.5 Applications of electrolysis
6. CARBON AND SOME OF ITS COMPOUNDS
- 6.1 Allotropes of carbon
- 6.2 Chemical properties of carbon
- 6.3 Carbon (IV) oxide
- 6.4 Carbon (II) oxide (CO)
- 6.5 Large scale production of sodium carbonate and sodium hydrogencarbonate
- 6.6 Effect of carbon (II) oxide and carbon (IV) oxide on the environment
- 6.7 Carbon cycle
Content developer
Salts: Uses of salts
4.0 Salts
4.6 Uses of salts
Salts are widely used in life. Table 4.5.5 presents some uses of salts.
Table 4.5.5: Uses of some salts
Project 4
- Find out why toothpastes and soap are classified as salts.
- What is the pH of a solution of wood ash in water? What about a solution of orange or ripe lemon juice?
- Describe how you would obtain salts from solutions of wood ash and orange juice. Proceed to prepare the salts.
Or
- Prepare iron (II) sulphate from a ground pumuce stone (the light black porous volcanic rock). Indicate all the steps and acid required.
- The salt obtained by this method is impure. Explain.
Or
- Prepare calcium nitrate from marble stones if available in your area. Indicate all the steps and acid required.
- The salt obtained by this method is impure. Explain.
Or
Rock salt consists mainly of sodium chloride with some insoluble impurities. Obtain sodium chloride from rock salt (or any other salt naturally found in the area).