Answer available
Class 9 · Chemistry · The Language of Chemistry
What is a chemical formula? State what the formula H2SO4 tells you.
2 marksEasyShort answer
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11 questions
- Answer available
Class 9 · Chemistry · The Language of Chemistry
State three pieces of information that a balanced chemical equation gives, and two that it does not.
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Balance the equation: KClO3 → KCl + O2
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Balance the equation: Al + H2SO4 → Al2(SO4)3 + H2
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Why must a chemical equation be balanced?
3 marksMediumShort answer
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Write the symbols of iron, sodium, potassium, silver and lead, and say why they differ from the English names.
2 marksEasyNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Write the formulae of calcium carbonate, aluminium sulphate and ammonium chloride.
2 marksEasyNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Balance the equation: Fe2O3 + CO → Fe + CO2
3 marksMediumNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
What is valency? State the valency of oxygen, aluminium and the sulphate radical.
2 marksEasyShort answer
- Answer available
Class 9 · Chemistry · The Language of Chemistry
Balance the equation: Fe + H2O → Fe3O4 + H2
2 marksEasyNumerical
- Answer available
Class 9 · Chemistry · The Language of Chemistry
The valency of aluminium is:
1 markEasyMCQ