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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