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OCR MERGED QUESTION PAPER AND MARK SCHEME GCSE (9−1) Chemistry B (Twenty First Century Science)J258/01 Breadth in Chemistry (Foundation Tier) FOR MAY 2024 $12.39   Add to cart
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OCR MERGED QUESTION PAPER AND MARK SCHEME GCSE (9−1) Chemistry B (Twenty First Century Science)J258/01 Breadth in Chemistry (Foundation Tier) FOR MAY 2024
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OCR MERGED QUESTION PAPER AND MARK SCHEME GCSE (9−1) Chemistry B (Twenty First Century Science)J258/01 Breadth in Chemistry (Foundation Tier) FOR MAY 2024

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  • October 16, 2024
  • 49
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ocr merged question paper and mark scheme gcse 9

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Friday 17 May 2024 – Morning
GCSE (9−1) Chemistry B (Twenty First Century Science)
J258/01 Breadth in Chemistry (Foundation Tier)
Time allowed: 1 hour 45 minutes




Turn over

, 2
1 Fuels such as diesel and petrol are made from hydrocarbons.

(a)
(i) Hydrocarbons are made from carbon and one other element.

What is the other element?

Put a ring around the correct option.

Chlorine Hydrogen Nitrogen Oxygen
[1]

(ii) What is the main source of hydrocarbons?

..................................................................................................................................................... [1]

(b) Alkanes are hydrocarbons.

Which compound is an alkane?

Tick (✓) one box.

Butanoic acid

Ethanol

Methane

Propene
[1]

(c) Alkenes are also hydrocarbons. They can be used to make polymers.

Which statements about polymers are true and which are false?

Tick (✓) one box in each row.

True False

All polymers are made from alkenes.

Polymers are long chain molecules.

Polymers can be synthetic or naturally occurring.
[2]




© OCR 2024

, 3
(d) Ethene is the monomer used to make a polymer called poly(ethene).

Fig. 1.1 shows the structure of ethene.

Fig. 1.1

H H

C C

H H

(i) Complete the diagram below to show the repeating unit of poly(ethene).




C C



[2]

(ii) Describe what happens when ethene monomers react together to form poly(ethene).

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..................................................................................................................................................... [2]




© OCR 2024 Turn over

, 4
2 Lithium is an element in Group 1 of the Periodic Table.

(a)
(i) Describe one physical property of lithium.

..........................................................................................................................................................

..................................................................................................................................................... [1]

(ii) Complete the diagram to show the arrangement of electrons in an atom of lithium.

Use the Periodic Table.




Li




[2]

(b) Lithium reacts with water to form an alkaline solution and hydrogen gas.

Complete the word equation and balanced symbol equation for the reaction.

Include state symbols on the symbol equation.


lithium + water .......................................... + hydrogen

2Li(s) + 2..........(l) 2LiOH(..........) + ..........(g)
[4]




© OCR 2024

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