SL-F4-Chemistry-2009-exam-pdf - Webs
SL-F4-Chemistry-2009-exam-pdf - Webs
SL-F4-Chemistry-2009-exam-pdf - Webs
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Somaliland National Examination Certificate of Secondary Education<br />
and Certification Board <strong>Chemistry</strong>, <strong>2009</strong><br />
(iii) State one use of water in the home (1 mark)<br />
………………………………………………………..…………………………………………….<br />
c) Potassium reacts violently with water. Write a balanced chemical reaction of this<br />
reaction.<br />
14<br />
(2 marks)<br />
………………………………………………………………………………………………….<br />
Question 7 (6 marks)<br />
a) The set up in the diagram below shows a reaction between a magnesium ribbon and<br />
steam.<br />
i. Identify gas X. (1 mark)<br />
………………………………………..<br />
ii. Name two physical properties of gas X. (2 marks)<br />
…………………………………………………………………………………………………….<br />
……………………………………….…………………………………………………………….<br />
© <strong>SL</strong>NECB, <strong>2009</strong>
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