Unit 3 specimen paper

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Specimen Paper
Centre Number Candidate Number For Examiner's Use
Surname
Other Names
Examiner's Initials
Candidate Signature
Question Mark
General Certificate of Secondary Education
Higher Tier 1
2
Chemistry Chemistry 3H 3
Unit Chemistry C3 4
For this paper you must have:
H 5
6
7
· the Data Sheet (as an insert). 8
You may use a calculator.
9
Time allowed TOTAL
! 60 minutes
Instructions
! Use black ink or black ball-point pen.
! Fill in the boxes at the top of this page.
! Answer all questions.
! You must answer the questions in the space provided. Do not
write outside the box around each page or on blank pages.
! Do all rough work in this book. Cross through any work you do
not want to be marked.
Information
! The marks for questions are shown in brackets.
! The maximum mark for this paper is 60.
! You are expected to use a calculator where appropriate.
! You are reminded of the need for good English and clear
presentation in your answers.
! Question 2(b) should be answered in continuous prose. In this
question you will be marked on your ability to:
­ use good English
­ organise information clearly
­ use specialist vocabulary where appropriate.
Advice
! In all calculations, show clearly how you work out your answer.
GCSE Chemistry 3 Specimen Paper Higher Tier V1.0

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There are no questions printed on this page
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
GCSE Chemistry 3 Specimen Paper Higher Tier V1.…read more

Page 3

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Answer all questions in the spaces provided.
1 Methanol can be made when methane reacts with oxygen.
1 (a) The energy level diagram for this reaction is shown below.
1 (a) (i) What is the energy change represented by A?
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(1 mark)
1 (a) (ii) Use the energy level diagram to explain how it shows that this reaction is exothermic.
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1 (b) A student did an experiment to find the energy released when methanol burns in air.…read more

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1 (b) (ii) The temperature change in Experiment 2 is greater than the temperature change in
Experiment 1 and Experiment 3.
Explain why.
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(2 marks)
1 (b) (iii) Suggest one reason why the student repeated the experiment.
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(1 mark)
1 (b) (iv) Use the temperature change in Experiments 1 and 3 to calculate how much energy is
released when 1g of methanol burns.…read more

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2 Drain Buster is used to clear and degrease drains. Sodium hydroxide is the main
chemical substance in Drain Buster.
2 (a) A student planned an experiment to find the concentration of the sodium hydroxide
solution in Drain Buster.
The teacher had to dilute the Drain Buster before the student could use it.
Explain why.
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(2 marks)
GCSE Chemistry 3 Specimen Paper Higher Tier V1.…read more

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2 (b) In this question you will be assessed on using good English, organising information
clearly and using specialist terms where appropriate.
The student wanted to find the volume of hydrochloric acid that reacts with a known
volume of diluted Drain Buster.
Describe how the student could do this by titration.
In your description you should include:
· the names of pieces of apparatus used
· the names of the substances used
· a risk assessment.
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3 Water is a natural resource. Drinking water in some parts of the UK is soft, but in other
parts drinking water is hard. Calcium ions in water cause water to be hard.
There are two types of hard water, permanent hard water and temporary hard water.
· Permanent hard water can be caused by calcium sulfate (CaSO4) dissolved in the
water.
· Temporary hard water can be caused by calcium hydrogencarbonate (Ca(HCO3)2)
dissolved in the water.…read more

Page 9

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3 (b) Permanent hard water can be softened.
3 (b) (i) Explain how adding sodium carbonate (Na2CO3) softens permanent hard water.
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(2 marks)
3 (b) (ii) Explain how a water filter containing carbon, silver and ion exchange resin softens
permanent hard water.
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(2 marks)
7
Turn over for the next question
Turn over !
GCSE Chemistry 3 Specimen Paper Higher Tier V1.…read more

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4 The structures shown are of the first three members of a homologous series of alcohols.
4 (a) (i) Draw a ring around the correct general formula for alcohols.
CnH2n+1OH C2nH2n+1OH CnH2n+2OH
(1 mark)
4 (a) (ii) What is the formula of the functional group for alcohols?
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(1 mark)
4 (b) Ethanol is the alcohol used in alcoholic drinks.
4 (b) (i) When ethanol dissolves in water the solution formed is not alkaline.…read more

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