End of Term Assessment - Form 4 Chemistry

1.     In which of the following situations is Brownian motion demonstrated?

• Pollen grains moving at random in water

• The scent of Perfume moving from one Part of a room to another

• The swelling of red beans when soaked in water

• Loss of heat from a hot body to a cold body

Which of the properties above refer to a neutron?

• A

• B

• C

• D

From the table below, which of the substances represented by the options, A, B, C and D, is MOST likely sodium chloride

• A

• B

• C

• D

Which of the following compounds is soluble in cold water?

• Lead sulfate

• Lead nitrate

• Lead chloride

• Lead carbonate

Which of the following oxides shows both acidic and basic properties?

• Iron (II) oxide

• Sodium oxide

• Calcium oxide

• Aluminium oxide

Which of the following statements BEST describes the difference between an atom and an ion?

• An atom is electrically neutral but an ion is positively charged.

• An atom is electrically neutral but an ion is negatively charged'

• An atom contains equal numbers of protons and electrons whereas an ion contains   more electrons than protons.

• An atom contains equal numbers of protons and electrons whereas an ion contains unequal numbers of protons and electrons

Which of the following is classified as a neutral oxide?

• Sodium oxide

• Sulfur dioxide

• Carbon dioxide

• Carbon monoxide

An element, X, has an electron configuration 2,8,1. At which of the following positions is the element in the Periodic Table?

• Period I Group I

• Period I Group II

• Period 3 Croup I

• Period 3 Group II

Crystals of sodium chloride are BEST described as

• macromolecular

•  ionic

• molecular

• metallic

The diagram above represents the arrangement of atoms in

• Sulfur

• graphite

• benzene

• diamond