Collins KS3 Science Now Assessment Pack - sample proof

eas with knowledge organisers

ss with easy-to-follow road maps

practice questions

KS3 SCIENCE NOW ASSESSMENT PACK

learning and make connections between

eers that use the science from each unit

edge with worked examples and

Check that students have secure knowledge of what has been taught in the KS3 Science Now course.

• Identify misconceptions and gaps in knowledge with 18 tests and mark schemes

• Check understanding of students’ maths, practical and vocabulary skills to inform teaching and learning

• Prepare for GCSE with a range of question types,

assessment objectives and GCSE 9-1 command words at KS3 demand

• Easy to customise for your school – photocopy, edit, and download: collins.co.uk/KS3ScienceNow/downloads

KS3 Science Now is an award-winning series and was winner of Curriculum Impact at the Teach Secondary Awards 2023.

KS3 SCIENCE NOW

KS3 SCIENCE NOW

Prepare your pupils for GCSE (9-1) Science with this flexible and practical resource.

• Integrate the resources into your existing KS3 with the flexible structure • Embed knowledge with a bank of retrieval questions and interleaving suggestions

• Plan and demonstrate clear progression with mapping and sequence rationales from KS2 to KS4 • Access expert guidance on addressing misconceptions and supporting commentary for practice questions

Easy to customise for your school – photocopy, edit, download and display: collins.co.uk/KS3ScienceNow/downloads

KS3 SCIENCE NOW Develop understanding and build confidence for GCSE (9-1) Science.

• Revisit prior learning and make connections between topics and ideas with knowledge organisers

• Track progress with easy-to-follow road maps

• Discover careers that use the science from each unit • Apply knowledge with worked examples and hundreds of practice questions

KS3 SCIENCE NOW Learn and Practice Book

Learn and Practice Book KS3 SCIENCE NOW Tracey Baxter, Amanda Clegg, Karen Collins and Ed Walsh

Tracey Baxter, Amanda Clegg, Karen Collins and Ed Walsh

15/08/2022 13:52

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15/08/2022 13:52

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Assessment Pack.indd 1

KS3 SCIENCE NOW

Made with responsibly sourced paper and vegetable-based ink.

KS3 SCIENCE NOW ASSESSMENT PACK

Teacher Pack

Learn and Practice Book

KS3 Science Amanda Now Tracey Baxter, Clegg, Learn and Practice Book 978-0-00-853152-2 Karen Collins and Ed Walsh 8531522_Student_Cover.indd 1

KS3 SCIENCE NOW Teacher Pack

rstanding and build confidence for ience.

KS3 SCIENCE NOW

KS3 SCIENCE NOW Learn and Practice Book

KS3 IENCE OW

11.4mm spine

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978-0-00-853155-3

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AIDAN GILL AND SAM HOLYMAN 12/4/2024 2:28 pm

Assessment 10

Chemical reactions

1 Some chemicals have hazard warning signs.

a What does

mean?

CKS3SN_10_aw001 Choose one correct answer.

[1 mark]

Corrosive



Flammable



sa Harmful



Irritant



m

b Suggest one safety precaution when using an acid which is labelled as an irritant.

Choose one correct answer.

[1 mark] 

Wear an apron or lab coat



Wear eye protection



Use rubber washing up gloves



e pl

Wear a hair covering

Choose one correct answer.

pr

c Which is the pH of an acid?

7



9



14



f



oo

1

[1 mark]

Maximum 3 marks

© HarperCollinsPublishers Ltd 2024

1

Assessment 10: Chemical reactions

2 This question is about chemical reactions. a

Match the name of the chemical reaction to its description.

[3 marks] Name of chemical reaction

Description

Displacement

Using heat energy to break down a substance.

sa

Thermal decomposition

m Combustion

A reaction between an acid and a base to make a salt.

e pl

Neutralisation

b

Burning of a fuel with oxygen from the air.

When a more reactive metal takes the place of a less reactive metal from its compound.

Give one observation which suggests a chemical change has happened.

[1 mark]

pr

_________________________________________________________________________ Maximum 4 marks

3 Indicators can be used to classify a substance as acid or alkali.

oo

a

Explain how litmus can be used to classify a liquid as an acid or an alkali.

[4 marks]

_________________________________________________________________________ _________________________________________________________________________

f

_________________________________________________________________________ _________________________________________________________________________ b

An acidic solution is tested with universal indicator.

[1 mark]

What colour would the universal indicator turn?

_________________________________________________________________________ Maximum 5 marks 4 Steve wanted to investigate the thermal decomposition of copper carbonate.

© HarperCollinsPublishers Ltd 2024

2

Assessment 10: Chemical reactions

Steve used the equipment below.

sa

CKS3SN_10_aw002 a

Complete the word equation for the thermal decomposition of copper carbonate. [2 marks]

Copper carbonate  _________________________ + _________________________ Classify this reaction as exothermic or endothermic. Explain your answer.

m

b

[2 marks]

Classification: _________________________ Reason:

e pl

_________________________________________________________________________ _________________________________________________________________________ c

Explain why copper oxide and copper carbonate are bases but not alkalis.

[2 marks]

pr

_________________________________________________________________________ _________________________________________________________________________

f

oo

Maximum 6 marks

© HarperCollinsPublishers Ltd 2024

3

Assessment 10: Chemical reactions

5 Jemma wanted to investigate the combustion of candle wax.

She lit the candle and drew the gases that were made through a piece of equipment to test them.

m

sa CKS3SN_10_aw003

e pl

a

Name the two reactants in Jemma’s investigation.

[2 marks]

_________________________________________________________________________ b

The limewater went from colourless to cloudy.

This proves that a gas was made. Name the gas.

pr

[1 mark]

_________________________________________________________________________ Jemma noticed that the funnel turned black.

Name the substance that made the funnel go black.

oo

c

[1 mark]

_________________________________________________________________________ d

Explain how a combustion reaction can also be classified as an oxidation reaction. [1 mark]

f

_________________________________________________________________________

Maximum 5 marks

6 Li wanted to investigate displacement reactions between copper sulfate solution and different metals.

They measured the same volume of copper sulfate each time and put the same mass of the metal into the beaker.

They measured the start and end temperature. © HarperCollinsPublishers Ltd 2024

4

Assessment 10: Chemical reactions

Li’s results are shown in the table below.

Metal

Temperature in oC Run 1

Run 2

Run 3

Mean

Nickel

8

7

9

8

Zinc

16

18

4

17

Magnesium 38

37

37

Y

sa a

[1 mark]

What is the independent variable?

_________________________________________________________________________ What measuring instrument would Li use to monitor the dependent variable?

m

b

[1 mark]

_________________________________________________________________________ Circle the anomalous result in the table.

d

Calculate the missing mean Y.

[1 mark]

e pl

c

[3 mark]

Give your answer to one decimal place.

_________________________________________________________________________ _________________________________________________________________________

e

pr

_________________________________________________________________________ Write the order of the metals from most to least reactive.

[1 mark]

oo

_________________________________________________________________________

Maximum 7 marks

f © HarperCollinsPublishers Ltd 2024

5

Assessment 10: Chemical reactions

Assessment 10 Answers Additional Guidance

Question

Answer

1a 1b 1c 2a

corrosive Wear eye protection 1

Marks

Marking point

1 1 1 3

AO1 AO2 AO1 AO1

Accept a 1 solid/precipitate being made

AO1

This question is 4 a levelled response.

0 marks – no relevant content 1-2 marks – some relevant points are made but not necessarily given in a logical order.

3-4 marks – a logical flow of information forms a through explanation including expected results.

1

AO1

2b

e pl

m

sa

[1] for one line [2] for two or three correct lines [3] for all correct lines

3b

Accept any of the following:

f

oo

pr

3a

Any one of the following: • bubbles of gas/fizzing/effervesce • a change in temperature • a colour change • a change in mass Indicative content: Add a few drops of litmus solution to the sample or dip litmus paper into the sample Look at the colour If litmus is red then the solution is an acid If the litmus is blue then the solution is an alkali

© HarperCollinsPublishers Ltd 2024

1

AO2

Assessment 10: Chemical reactions

4a 4b 4c 5a

Red, orange, yellow copper oxide carbon dioxide Endothermic Energy taken in by the reaction Reacts with acid so is a base Doesn’t dissolve in water/insoluble in water so can’t be an alkali Wax Oxygen Carbon dioxide Carbon The atoms in the fuel have oxygen added to them

6a 6b 6c 6d

metal thermometer Circle zinc run three (4) 38 + 37 + 37 = 112 112 / 3 = 37.333 Y = 37.3oC

6e

Magnesium, zinc, nickel

e pl

m

sa

5b 5c 5d

Accept in any order

Accept fuel Do not accept air Accept CO2 Accept soot Accept oxygen is added

Give three marks for the correct answer without working Must be in this order.

Accept: Mg, Zn, Ni

1 1 1 1 1

AO2 AO3 AO3

1 1 1

AO2 AO1

1 1 1

AO1 AO2 AO2

1 1 1 3

AO2 AO2 AO3 AO2

1

AO3

f

oo

pr © HarperCollinsPublishers Ltd 2024

2

Assessment 10: Chemical reactions