DP Chemistry (first assessment 2025)

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Question 21M.1A.SL.TZ1.16

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ1.16
Level SL Paper 1A Time zone TZ1
Command term Interpret Question number 16 Adapted from N/A
16.
[Maximum mark: 1]
21M.1A.SL.TZ1.16

Curve 1 shows the mass change when marble chips are added to excess hydrochloric acid in an open beaker.

Which changes would produce curve 2?

A.  Powdering the marble chips and heating

B.  Powdering the marble chips and doubling their mass

C.  Doubling the volume of acid and heating

D.  Doubling the acid concentration and powdering the marble chips

[1]

Markscheme

B

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