Required Practical: Analysis & Purification of Water Samples (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
13 cards from this deck
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Practise the cards
13 cards from this deck
Purpose of water analysis practical
Purpose of water analysis practical
Analyse and purify water samples to determine quality
pH of pure water
pH of pure water
7 (neutral)
Tools used to measure pH of water
Tools used to measure pH of water
pH probe or universal indicator paper
Purpose of pH testing in water analysis
Purpose of pH testing in water analysis
Check acidity or alkalinity of water
Method to test for dissolved solids in water
Method to test for dissolved solids in water
Weigh basin, evaporate water, reweigh to check for solid residue
Expected residue when pure water evaporates
Expected residue when pure water evaporates
No solid residue
Purpose of distillation in water purification
Purpose of distillation in water purification
Separate pure water from dissolved solids and impurities
Key apparatus for distillation setup
Key apparatus for distillation setup
Conical flask, delivery tube, condenser, receiving beaker
Process during distillation of water
Process during distillation of water
Water boils, evaporates, vapour cools and condenses
Expected result after distilling water
Expected result after distilling water
Water free of impurities
Expected pH of distilled water
Expected pH of distilled water
Close to 7
Harm from acidic/alkaline water samples
Harm from acidic/alkaline water samples
Irritation to eyes or skin
Sources of error in distillation practical
Sources of error in distillation practical
Contamination of samples or loss of water during distillation