CHEMISTRY TRIAL QUESTIONS
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1.Define atomic number and mass number.
B.Give 3 characteristics of covalent bond.
B.Give 3 characteristics of covalent bond.
2.Define the following
*IUPAC* nomenclature
*Standard* solution
*Molar* mass
*Oxidation*
number
*IUPAC* nomenclature
*Standard* solution
*Molar* mass
*Oxidation*
number
3.what is salt?
B.Name two examples of normal salt
B.Name two examples of normal salt
4.what is neutralization reaction?
B.Give 4 characteristics of concentrated acid.
B.Give 4 characteristics of concentrated acid.
5.Name 3 sources of natural water.
B.Give 2 disadvantages of hard water
B.Give 2 disadvantages of hard water
6.Give two reasons why carbon dioxide is used in putting fire.
B.Describe briefly how water is purified for supply to a township.
B.Describe briefly how water is purified for supply to a township.
7.Name the main ore from which aluminum is extracted.
B.State 3 properties that make aluminum suitable for use as cooking utensils.
B.State 3 properties that make aluminum suitable for use as cooking utensils.