Question 1
Paper 2Medium6 marksA laboratory has several batches of a dry solid containing crystalline sulfur and sodium chloride. The relative amounts of the two substances vary between batches. Sodium chloride dissolves in water, whereas sulfur does not. A student wants to obtain dry sodium chloride from one batch.
(a)[2]
Classify each of sulfur and sodium chloride as an element, compound or mixture.
(b)[1]
State one feature, other than the variable proportions, that distinguishes this sample from a compound.
(c)[3]
Outline a sequence of steps to obtain dry sodium chloride from the sample.