DP Chemistry (last assessment 2024)

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Question 18N.3.sl.TZ0.a

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.sl.TZ0.a
Level sl Paper 3 Time zone TZ0
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 2]
18N.3.sl.TZ0.a

The Sun’s energy is produced by the fusion of hydrogen nuclei.

Explain fusion reactions with reference to binding energy.

[2]

Markscheme

small/lighter nuclei combine to form larger/heavier nuclei ✔

product has higher binding energy «per nucleon» ✔

 

Accept binding energy curve with explanation.

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