Purity, Formulations & Chromatography (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does a pure substance contain?
What does a pure substance contain?
Only one type of material
Which of these is a pure substance?
Which of these is a pure substance?
Water
At what temperatures do pure substances melt and boil?
At what temperatures do pure substances melt and boil?
Exact temperatures
How do scientists test if a substance is pure?
How do scientists test if a substance is pure?
Measure its melting point
What happens when a pure substance melts?
What happens when a pure substance melts?
Sharp melting at one temperature
How does a mixture melt differently from a pure substance?
How does a mixture melt differently from a pure substance?
Over a range of temperatures
What effect do small impurities have on melting?
What effect do small impurities have on melting?
Cause melting over a temperature range
What does 'pure' mean in science?
What does 'pure' mean in science?
Single element or compound only
Why is 'pure milk' from a shop not scientifically pure?
Why is 'pure milk' from a shop not scientifically pure?
It's a mixture of water, fats, proteins
What is a formulation?
What is a formulation?
A specially designed mixture
What is true about the ingredients in a formulation?
What is true about the ingredients in a formulation?
Each has a specific job
What component in paint provides the colour?
What component in paint provides the colour?
Pigments