C1.1.3 Chemical Reactions
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Foundation and Higher QSP 1F .07
1.
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Mark scheme
Q
Answer
Extra Information
Mark
1 (a) (i)
Both have one/1 electron in the
outer energy level/shell
Allow both react in a similar
way
1
1 (a) (ii)
Eleven/11
1
1 (a) (iii)
Twelve/12
1
1 (a)
(iv)
8 electrons in second energy
level/shell
1 electron in outer energy level/shell
2
Two sodium atoms react
Two ( bonded) chlorine atoms react
Two sodium ions and two chloride
ions ( are produced)
Allow 1 mark maximum if
electrons in first energy
shell/level have been changed
Allow one chlorine molecule
reacts
Allow two molecules of sodium
chloride ( are produced) or two
sodium chloride particles ( are
produced)
Total
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1
1
1
1
1
8