A large amount of calcium chloride was accidentally released into a freshwater pond.
Describe a test to show that the pond water contains calcium ions.
Give the result of the test.
Test
Result
Describe a test to show that the pond water contains chloride ions.
Give the result of the test.
Test
Result
Plan an investigation to find the total mass of dissolved solids in a 150 cm3150\text{ cm}^3150 cm3 sample of the pond water.
Your investigation should produce valid results.
29 exam-style questions on AQA GCSE Chemistry 8.3 Identification of ions by chemical and spectroscopic means, covering 8.3.1 Flame tests, 8.3.2 Metal hydroxides, 8.3.3 Carbonates, 8.3.4 Halides, 8.3.5 Sulfates, 8.3.6 Instrumental methods, and 8.3.7 Flame emission spectroscopy. Each one has a worked solution and a mark scheme showing where the marks go.