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Form 2 Chemistry questions and answers on properties and trends across a period
Give a reason why phosphorus is stored under water.
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1.
Explain why anhydrous aluminium chloride is fairly soluble in organic solvent while anhydrous magnesium chloride is insoluble.
2.
Give a reason why phosphorus is stored under water.
3.
Yellow phosphorus reacts with chlorine gas to form a yellow liquid. The liquid fumes when exposed to air. Explain these observation
4.
Explain why there is general increase in the first ionization energies of the elements in period 3 of the table from left to right.
5.
Iron (III) oxide was found to be contaminated with copper (II) sulphate. Describe how a pure sample of iron (III) oxide can be obtained.
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