IGCSE Chemistry 4335/1F Mark Scheme (Results) November 2008 - Edexcel
IGCSE Chemistry 4335/1F Mark Scheme (Results) November 2008
IGCSE
IGCSE Chemistry (4335/1F)
Edexcel Limited. Registered in England and Wales No. 4496750 Registered Office: One90 High Holborn, London WC1V 7BH
The following acronyms are used
owtte or words to that effect
ecf
error carried forward
dop
dependent on previous
nwn
no working necessary
4335_1F 0811
Question Number 1 (a)
Question Number 1 (b)
Question Number 1 (c)
Question Number 1 (d)
Question Number 1 (e)
Correct Answer Lithium/Li
Notes
Correct Answer Argon/Ar
Notes
Correct Answer
Notes
Name or symbol of any element in group 1 / hydrogen / H
Correct Answer
Names or symbols of two elements in the same group (1 to 0)
Notes
Correct Answer
Notes
Name or symbol of any element in Group 1 or 2, excluding Be
Mark (1)
Mark (1)
Mark
(1) Mark
(1) Mark
(1) (Total 5 marks)
4335_1F 0811
Question Number 2 (a) (i)
Question Number 2 (a) (ii)
Question Number 2 (a) (iii)
Question Number 2 (b) (i)
Correct Answer neutron
Correct Answer electron
Correct Answer electron
Correct Answer isotopes
Question Number 2 (b) (ii)
Correct Answer
3 3 3 4
Notes
Mark
Notes
(1) Mark
Notes
(1) Mark
Notes
(1) Mark
(1)
Notes
Mark
last two may be either
1
way round
1
1
1
(4)
(Total 8 marks)
4335_1F 0811
Question Number 3 (a)
Question Number 3 (b) (i)
Question Number 3 (b) (ii)
Question Number 3 (c)
Question Number 3 (d)
Correct Answer Iron + steam ? iron (III) oxide + hydrogen
Correct Answer Cool / condense
Correct Answer ref to boiling point (1) 100 (oC) (1) OR ref to freezing point (1) 0(oC)
Correct Answer white (1) to blue (1) hydrated (accept `hydrous') copper ((II)) sulphate
Correct Answer white (accept grey) (1) Dehydration / becomes anhydrous
Notes Allow water Notes
Notes
Mark
(1) Mark
(1) Mark
Allow melting point
(2)
Notes
Mark
Ignore pale/dark
2
1
(3)
Notes
Mark
1 1 (2)
(Total 9 marks)
4335_1F 0811
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