Laboratory safety, apparatus and separation techniques

Question 1 of 10

The liquid collected after distillation is called the ___.

Question 2 of 10

The process in which a solid changes directly to a gas is ___.

Question 3 of 10

The best method to separate salt from salt solution is

Question 4 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 5 of 10

A pure substance has

Question 6 of 10

State five safety rules to follow in a chemistry laboratory and give a reason for each.

Question 7 of 10

A burette is used to

Question 8 of 10

Two immiscible liquids such as oil and water are separated using a

Question 9 of 10

A substance labelled with a skull and crossbones symbol is

Question 10 of 10

A mixture of ethanol and water is best separated by