Oxford Cambridge and RSA
GCSE (9–1) Chemistry A (Gateway
Science) H
J248/03 Paper 3 (Higher Tier)
Sample Question Paper
Date – Morning/Afternoon
Time allowed: 1 hour 45 minutes
You must have:
• the Data Sheet
You may use:
• a scientific or graphical calculator
• a ruler
* 0 0 0 0 0 0 *
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided.
• Additional paper may be used if required but you must clearly show your candidate
number, centre number and question number(s).
• Do not write in the bar codes.
INFORMATION
• The total mark for this paper is 90.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document consists of 28 pages.
© OCR 2016 J248/03 Turn over
[601/8663/X] DC (…) D10028/04
, 2
SECTION A
Answer all the questions.
You should spend a maximum of 30 minutes on this section.
1 Tim is separating the colours in a sample of black ink using paper chromatography.
He puts a spot of black ink onto filter paper.
He dips the filter paper into ethanol in a beaker.
What is the name given to ethanol in this experiment?
A gas phase
B mobile phase
C solid phase
D stationary phase
Your answer
[1]
2 Look at Tim’s chromatogram.
solvent front
green spot
red spot
yellow spot
black ink spot
What is the Rf value of the green spot? Use a ruler to help you.
A 0.17
B 0.42
C 0.83
D 1.00
Your answer
[1]
© OCR 2016 J248/03
, 3
3 What is the best description of the particles in a liquid?
Distance between
Movement of particles
particles
in continuous random
A close together
motion
vibrating about a fixed
B close together
point
in continuous random
C far apart
motion
vibrating about a fixed
D far apart
point
Your answer
[1]
4 The molecular formula of decene is C10H20.
What is the empirical formula of decene?
A CH2
B C2H4
C C5H10
D C20H40
Your answer
[1]
© OCR 2016 J248/03 Turn over
, 4
5 Hardeep FV.does FV.some FV.experiments FV.with FV.acids FV.and FV.alkalis.
He FV.measures FV.the FV.pH FV.of FV.a FV.sample FV.of FV.acid FV.and FV.a FV.sample FV.of FV.alkali.
He FV.adds FV.magnesium FV.metal FV.to FV.a FV.sample FV.of FV.the FV.acid FV.and FV.to FV.a
sample FV.of FV.the FV.alkali. FV.What FV.results FV.should FV.Hardeep FV.expect?
FV.
Results FV.for FV.acid Results FV.for FV.alkali
FV.experiments FV.experiments
pH FV.below FV.7 pH FV.above FV.7
A
no FV.reaction FV.with FV.magnesium FV. magnesium
FV.fizzes
pH FV.below FV.7 pH FV.above FV.7
B
FV.magnesium no FV.reaction FV.with FV.magnesium
FV.fizzes
pH FV.above FV.7 pH FV.above FV.7
C
FV. magnesium no FV.reaction FV.with FV.magnesium
FV.fizzes
pH FV.above FV.7 pH FV.below FV.7
D
no FV.reaction FV.with FV.magnesium FV. magnesium
FV.fizzes
Your FV.answer
[1]
6 Rosa FV.tests FV.some FV.compounds FV.to FV.find FV.out FV.if FV.they FV.conduct FV.electricity.
Which FV.row FV.in FV.the FV.table FV.shows FV.the FV.correct FV.results FV.for FV.each FV.compound?
Ionic
Solid FV.ionic FV.compoun Molten FV.ionic
compound
FV. d FV.compound
FV.dissolved
FV.in
water
does FV.not
A conducts conducts
FV.conduct
B conducts conducts conducts
does FV.not
C conducts conducts
FV.conduct
does FV.not
D
conduct conducts conducts
Your FV.answer
[1]
© OCR 2016 J248/03
GCSE (9–1) Chemistry A (Gateway
Science) H
J248/03 Paper 3 (Higher Tier)
Sample Question Paper
Date – Morning/Afternoon
Time allowed: 1 hour 45 minutes
You must have:
• the Data Sheet
You may use:
• a scientific or graphical calculator
• a ruler
* 0 0 0 0 0 0 *
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided.
• Additional paper may be used if required but you must clearly show your candidate
number, centre number and question number(s).
• Do not write in the bar codes.
INFORMATION
• The total mark for this paper is 90.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document consists of 28 pages.
© OCR 2016 J248/03 Turn over
[601/8663/X] DC (…) D10028/04
, 2
SECTION A
Answer all the questions.
You should spend a maximum of 30 minutes on this section.
1 Tim is separating the colours in a sample of black ink using paper chromatography.
He puts a spot of black ink onto filter paper.
He dips the filter paper into ethanol in a beaker.
What is the name given to ethanol in this experiment?
A gas phase
B mobile phase
C solid phase
D stationary phase
Your answer
[1]
2 Look at Tim’s chromatogram.
solvent front
green spot
red spot
yellow spot
black ink spot
What is the Rf value of the green spot? Use a ruler to help you.
A 0.17
B 0.42
C 0.83
D 1.00
Your answer
[1]
© OCR 2016 J248/03
, 3
3 What is the best description of the particles in a liquid?
Distance between
Movement of particles
particles
in continuous random
A close together
motion
vibrating about a fixed
B close together
point
in continuous random
C far apart
motion
vibrating about a fixed
D far apart
point
Your answer
[1]
4 The molecular formula of decene is C10H20.
What is the empirical formula of decene?
A CH2
B C2H4
C C5H10
D C20H40
Your answer
[1]
© OCR 2016 J248/03 Turn over
, 4
5 Hardeep FV.does FV.some FV.experiments FV.with FV.acids FV.and FV.alkalis.
He FV.measures FV.the FV.pH FV.of FV.a FV.sample FV.of FV.acid FV.and FV.a FV.sample FV.of FV.alkali.
He FV.adds FV.magnesium FV.metal FV.to FV.a FV.sample FV.of FV.the FV.acid FV.and FV.to FV.a
sample FV.of FV.the FV.alkali. FV.What FV.results FV.should FV.Hardeep FV.expect?
FV.
Results FV.for FV.acid Results FV.for FV.alkali
FV.experiments FV.experiments
pH FV.below FV.7 pH FV.above FV.7
A
no FV.reaction FV.with FV.magnesium FV. magnesium
FV.fizzes
pH FV.below FV.7 pH FV.above FV.7
B
FV.magnesium no FV.reaction FV.with FV.magnesium
FV.fizzes
pH FV.above FV.7 pH FV.above FV.7
C
FV. magnesium no FV.reaction FV.with FV.magnesium
FV.fizzes
pH FV.above FV.7 pH FV.below FV.7
D
no FV.reaction FV.with FV.magnesium FV. magnesium
FV.fizzes
Your FV.answer
[1]
6 Rosa FV.tests FV.some FV.compounds FV.to FV.find FV.out FV.if FV.they FV.conduct FV.electricity.
Which FV.row FV.in FV.the FV.table FV.shows FV.the FV.correct FV.results FV.for FV.each FV.compound?
Ionic
Solid FV.ionic FV.compoun Molten FV.ionic
compound
FV. d FV.compound
FV.dissolved
FV.in
water
does FV.not
A conducts conducts
FV.conduct
B conducts conducts conducts
does FV.not
C conducts conducts
FV.conduct
does FV.not
D
conduct conducts conducts
Your FV.answer
[1]
© OCR 2016 J248/03
