DP Chemistry (first assessment 2025)

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Question EXM.2.SL.TZ0.1

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Date May Example question Marks available [Maximum mark: 3] Reference code EXM.2.SL.TZ0.1
Level SL Paper 2 Time zone TZ0
Command term Explain Question number 1 Adapted from N/A
1.
[Maximum mark: 3]
EXM.2.SL.TZ0.1

Explain in terms of their metallic bonding why aluminium, Al and not calcium, Ca, can be used to make tent frames.

[3]

Markscheme

metallic bonding in Al is stronger ✓


charge on cation /Al3+ is higher
OR
more valence electrons «than in Ca» ✓


ionic radius of Al3+ is smaller ✓

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