Laboratory safety, apparatus and separation techniques

Question 1 of 10

The apparatus used to measure a fixed volume of solution accurately, such as 25.0 cm³, is a

Question 2 of 10

Explain how paper chromatography can show whether a food colouring is a single dye or a mixture, and how Rf values identify the dyes.

Question 3 of 10

Water enters a Liebig condenser

Question 4 of 10

The different dyes in black ink can be separated by

Question 5 of 10

A fume cupboard is used when

Question 6 of 10

The solvent front in chromatography should start below the baseline.

Question 7 of 10

A burette is used to

Question 8 of 10

(a) Draw and label the apparatus for simple distillation. (b) Explain how it separates water from a salt solution. (c) State why fractional distillation is needed for ethanol and water.

Question 9 of 10

Filtration can separate a dissolved solid from its solvent.

Question 10 of 10

Pure water can be obtained from sea water by