OCR GCSE Chemistry B · J258
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Making saltsAn insoluble salt can be made by mixing two suitable salt solutions. Their dissolved substances react to form a solid precipitate. For example, mixing magnesium sulfate solution with sodium carbonate solution produces insoluble magnesium carbonate and leaves sodium sulfate dissolved in the water.