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Question 17N.2.SL.TZ0.03b

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Date November 2017 Marks available [Maximum mark: 3] Reference code 17N.2.SL.TZ0.03b
Level SL Paper 2 Time zone TZ0
Command term Explain Question number b Adapted from N/A
b.
[Maximum mark: 3]
17N.2.SL.TZ0.03b
(b)

Water has important solvent properties. Explain these properties using an example to illustrate your answer.

[3]

Markscheme

a. water molecule is polar

    OR

    water has «weak» positive and negative charges

c. water forms hydrogen bonds with polar substances

d. positive/hydrogen side/pole of water attracted to negative ions

    OR

    negative/oxygen side/pole attracted to positive ions

e. glucose/other example dissolves because it is polar

    OR

    sodium chloride/other example dissolves because ions are attracted to water

[Max 3 Marks]

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