NECTA Form 1–4 (CSEE) · Form 1 · Chemistry (Form 1) · Notes · Unit 5: Water, The Hydrological Cycle, Water Pollution & Municipal Treatment

Unit 5: Water, The Hydrological Cycle, Water Pollution & Municipal Treatment

Official NECTA CSEE Form 1 Chemistry Topic 1.3: Physical and chemical properties of pure water, anomalous expansion at 4C and aquatic life preservation, chemical tests for presence of water (anhydrous CuSO4, CoCl2) vs physical tests for purity (sharp freezing/boiling points), hydrological cycle, water pollution classes, biochemical mechanism of eutrophication, industrial municipal water purification steps (screening, aeration, coagulation with alum, sedimentation, filtration, chlorination), and metal reactivity with water and steam.