DP Chemistry (last assessment 2024)

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Question 22M.2.sl.TZ2.1d

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.sl.TZ2.1d
Level sl Paper 2 Time zone TZ2
Command term Describe Question number d Adapted from N/A
d.
[Maximum mark: 2]
22M.2.sl.TZ2.1d

Lithium reacts with water to form an alkaline solution.

(d)

Describe two observations that indicate the reaction of lithium with water is exothermic.

[2]

Markscheme

Any two:

temperature of the water increases ✔

lithium melts ✔

pop sound is heard ✔

 

Accept “lithium/hydrogen catches fire”.

Do not accept “smoke is observed”.

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