Required Practical: Analysis & Purification of Water Samples (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does the term 'potable' mean when describing water?
What does the term 'potable' mean when describing water?
Safe to drink
What pH should pure water have?
What pH should pure water have?
7
Which equipment can be used to measure the pH of a water sample?
Which equipment can be used to measure the pH of a water sample?
pH probe
What is the purpose of pH testing in water analysis?
What is the purpose of pH testing in water analysis?
Check acidity or alkalinity
What should remain after evaporating pure water from an evaporating basin?
What should remain after evaporating pure water from an evaporating basin?
No solid residue
Which piece of equipment is used to test for dissolved solids?
Which piece of equipment is used to test for dissolved solids?
Evaporating basin
What is the purpose of distillation in water purification?
What is the purpose of distillation in water purification?
Separate water from dissolved solids
What happens to dissolved solids during distillation?
What happens to dissolved solids during distillation?
Left behind in conical flask
Which equipment cools water vapour back into liquid during distillation?
Which equipment cools water vapour back into liquid during distillation?
Condenser
What precaution should be taken with hot apparatus?
What precaution should be taken with hot apparatus?
Allow time to cool before touching
What protection is needed when handling acidic or alkaline water samples?
What protection is needed when handling acidic or alkaline water samples?
Eye protection
Which is a possible source of error in this practical?
Which is a possible source of error in this practical?
Contamination of water samples