Required Practical: Investigating Chromatography (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the purpose of paper chromatography?
What is the purpose of paper chromatography?
To separate and identify chemicals
Why must you use a pencil, not ink, to draw the baseline?
Why must you use a pencil, not ink, to draw the baseline?
Ink would dissolve in the solvent
How far from the short edge should the pencil line be drawn?
How far from the short edge should the pencil line be drawn?
2 cm
What depth of solvent should be poured into the beaker?
What depth of solvent should be poured into the beaker?
About 1 cm deep
Why must the ink spot not touch the solvent when placed in the beaker?
Why must the ink spot not touch the solvent when placed in the beaker?
It would dissolve before separating
When should you remove the paper from the beaker?
When should you remove the paper from the beaker?
When solvent is 1 cm from the top
What should you cover the beaker with during the experiment?
What should you cover the beaker with during the experiment?
A watch glass
When measuring how far a spot has moved, where should you measure from?
When measuring how far a spot has moved, where should you measure from?
The centre of the spot
What is the formula for calculating the value?
What is the formula for calculating the value?
What does the value help you do?
What does the value help you do?
Identify different chemicals