DP Chemistry (last assessment 2024)

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Question 23M.1.SL.TZ2.28

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1.SL.TZ2.28
Level SL Paper 1 Time zone TZ2
Command term Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
23M.1.SL.TZ2.28

Which observation would explain a systematic error for an experiment involving the combustion of magnesium to find the empirical formula of its oxide?

A.  The crucible lid was slightly ajar during heating.

B.  The product was a white powdery substance.

C.  The crucible had black soot on the bottom after heating.

D.  The flame colour during heating was yellow.

[1]

Markscheme

C

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