Edexcel Gcse Chemistry/additional Science - Unit C2: Discovering Chemistry Page 9
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(c) A ‘barium meal’ may be given to a patient before
an X-ray is taken.
A ‘barium meal’ is a suspension of barium sulfate
in water.
Give ONE reason why barium sulfate is used in
this way. (1 mark)
_________________________________________________________
_________________________________________________________
_________________________________________________________
(d) Complete the sentences by putting a cross (
) in
the box next to your answer.
(i)
The table shows that copper chloride is
soluble in water.
This suggests that the structure of copper
chloride is
A
simple molecular, covalent
b
giant molecular, covalent
C
ionic
D
metallic
(1 mark)
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