Water (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does potable water mean?
What does potable water mean?
Water safe to drink
What does a filter bed contain to remove solid particles from fresh water?
What does a filter bed contain to remove solid particles from fresh water?
Sand and pebbles
Which method can be used to sterilise fresh water by killing harmful microbes?
Which method can be used to sterilise fresh water by killing harmful microbes?
Chlorine
What is the process of removing salt from seawater called?
What is the process of removing salt from seawater called?
Desalination
In distillation, what happens to seawater?
In distillation, what happens to seawater?
Heated to steam, cooled to water, salt remains
In reverse osmosis, what can pass through the special membrane?
In reverse osmosis, what can pass through the special membrane?
Water molecules but not salt molecules
Why are desalination methods expensive?
Why are desalination methods expensive?
They need lots of energy
What produces wastewater that needs to be cleaned?
What produces wastewater that needs to be cleaned?
Households, factories and farms
What happens in the first stage of wastewater treatment?
What happens in the first stage of wastewater treatment?
Screening and grit removal
What happens during the sedimentation stage of wastewater treatment?
What happens during the sedimentation stage of wastewater treatment?
Smaller particles settle at the bottom
What does anaerobic mean?
What does anaerobic mean?
Without oxygen
What happens in aerobic biological treatment of wastewater?
What happens in aerobic biological treatment of wastewater?
Microbes break down dissolved organic materials