Page 151 - Chemistry_Form_2

Chemistry
for Secondary Schools

8. Explain the following terms and illustrate their significance by providing
an example for each:
(a) pH indicators
(b) Double salt
FOR ONLINE READING ONLY
(c) Titration
(d) Solubility
9. Sort out the following salts into groups of soluble and insoluble salts:
Sodium carbonate, lead nitrate, lead sulfate, calcium carbonate, copper(II)

sulfate, sodium nitrate, zinc chloride, silver chloride, barium carbonate,
sodium sulfate, sodium chloride, potassium chloride, ammonium carbonate,
and barium sulfate.

10. With reasons, suggest the best methods for preparing the following
compounds:
(a) Silver chloride
(b) Lead(II) sulfate

(c) Copper(II) nitrate
(d) Calcium carbonate
(e) Anhydrous zinc chloride

11. What are the thermal behaviours of metals carbonates, nitrates, chlorides,
and sulfates when heated? Give an example in each case.
12. How are salts useful in our life in the following aspects?

(a) Food preservation and preparation
(b) Agricultural practices
(c) Medical applications

13. Describe acids and bases, citing five examples in each.

14. Write the balanced chemical equations and net ionic equations for the
reactions between sodium hydroxide and;
(a) sulfuric acid
(b) nitric acid

15. A chemistry student tested five solutions A, B, C, D, and E with a universal
indicator solution to determine their pH values. The results obtained are
shown in the following table:

144 Student’s Book Form Two

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CHEMISTRY FORM TWO NEW 2025 DUMMY.indd 144 01/08/2025 11:21:11