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THIS IS A NEW SPECIFICATION

ADVANCED SUBSIDIARY GCE CHEMISTRY B (SALTERS)
F331 Chemistry
for Life
Candidates answer on the question paper
Friday 9 January 2009 A calculator may
be used for this paper

Afternoon
OCR Supplied Materials:
· Data Sheet for Chemistry B (Salters)
Duration: 1 hour 15 minutes (inserted)…

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· You are advised to show all the steps in any calculations.
· The total number of marks for this paper is 60.
4 13
· This document consists of 12 pages. Any blank pages are indicated.
TOTAL 60
© OCR 2009 [K/500/7964]
OCR is an exempt Charity SP SHW…

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2
© OCR 2009

Answer all the questions.
1 Chemists have put forward various models to try to explain atomic structures. Scientific
models
often change in the light of new evidence.
The following diagrams show possible structures for atoms based on different models, A­D.
Model A Model B Model C…

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3
(b) The current model of the atom describes a nucleus containing protons and neutrons
surrounded by electrons in energy levels.
(i) Complete the following table showing the properties of the subatomic particles.
subatomic particle
© OCR 2009

Turn over relative mass relative charge
proton +1
neutron 1
electron negligible…

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