SIMPLE CLASSIFICATION OF SUBSTANCES

Identify the insoluble substance

• E

• D

• B

• C

Identify the method of separation shown in the set-up

• Simple distillation

• Evaporation

• Crystallisation

• Fractional distillation

Which of the following does not undergo sublimation

• Copper (II) sulphate

• Anhydrous Iron (II) chloride

• Benzoic acid

• Aluminium chloride

Identify elements present in Ammonia

• Nitrogen and Carbon

• Nitrogen and Oxygen

• Carbon and Oxygen

• Nitrogen and Hydrogen

Identify the symbol of Copper

• Co

• C

• Cu

• Fe

Identify an element whose symbol is Hg

• Mercury

• Hydrogen

• Gold

• Silver

What is the Latin name of Lead?

• Ledum

• Ferrum

• Natrium

• Plumbum

Give the product of Sulphur + Oxygen

• Sulphur oxygen

• Sulphur phosphate

• Sulphur (IV) oxide

• Sulphur sulphide

Which of the following is not true about permanent chemical changes?

• New substances are formed

• The change can be reversed

• The change is irreversible

• Heat energy is released or absorbed

What is melting point?

• Change of solid to liquid

• Change of solid to gas

• It is a constant temperature at which a pure solid changes to a liquid

• A process of heating solid so that it changes to a liquid