Exam-style mark scheme
Question
Answers
P6 Molecules
and matter
Extra information
Marks
AO / Spec
ref.
01.1
D, C, E, A
1 mark for one letter in
the correct order.
2 marks for two in the
correct order.
3 marks for all in the
correct order.
3
AO2
P3.1.1
WS 2.2
01.2
The ice cube may melt.
random error
Accept any sensible
answer.
1
1
AO3
WS 3.7
01.3
16.8
0.006
= 2800
kg/m3
Accept 2800 with no
working shown for 2
marks.
1
AO1×1
AO2×2
P3.1.1
1
1
02.1
Changes of state are examples of physical
changes.
1
AO1
P3.1.1
02.2
temperature
1
AO1
P3.3.3
02.3
0.06  2 260 000
= 135 600 (J)
Accept 135 600 (J)
with no working shown
for 2 marks.
1
1
AO2
P3.2.3
02.4
reduces the amount of chemicals being
used
Any sensible answer.
1
AO3
WS 1.4
03
Solid particles have less energetic than
liquid particles
Liquid particles are less energetic than gas
particles.
Solid particles are in contact.
liquid particles are in contact.
Liquid and gas particles are free to move.
Solid particles vibrate about a fixed
position.
1
AO1
P3.1.1
04.1
500 g
= 0.5 kg
1000
0.5 × 45 000
= 22 500
= 22.5 (kJ)
© Oxford University Press 2016
1
1
1
1
1
Accept 22.5 (kJ) with
no working shown for
4 marks.
1
1
1
1
AO1×1
AO2×3
P3.2.3
www.oxfordsecondary.co.uk/acknowledgements
This resource sheet may have been changed from the original.
1
Exam-style mark scheme
Question
04.2
Answers
16 275 = 0.5 × specific heat capacity × 155
6275
0.5  155
= 210
J/kg °C
04.3
The energy is used to re-join the
molecules.
04.4
Wear gloves.
Avoid breathing fumes.
© Oxford University Press 2016
P6 Molecules
and matter
Extra information
Accept 210 with no
working shown for 3
marks.
Marks
1
1
AO / Spec
ref.
AO1×1
AO2×3
P3.2.2
1
1
Accept any sensible
answers.
1
AO1
P3.1.1
1
1
AO3
WS 2.4
www.oxfordsecondary.co.uk/acknowledgements
This resource sheet may have been changed from the original.
2