DP Chemistry (first assessment 2025)

Test builder »

Question 21N.1A.SL.TZ0.18

Date	November 2021	Marks available	[Maximum mark: 1]	Reference code	21N.1A.SL.TZ0.18
Level	SL	Paper	1A	Time zone	TZ0
Command term	Determine	Question number	18	Adapted from	N/A

18.

[Maximum mark: 1]

21N.1A.SL.TZ0.18

Which combination has the greatest rate of reaction at room temperature?

[1]

Markscheme

A

Syllabus sections

Reactivity 2. How much, how fast and how far? » Reactivity 2.2—How fast? The rate of chemical change » Reactivity 2.2.3—Factors that influence the rate of a reaction include pressure, concentration, surface area, temperature and the presence of a catalyst. Predict and explain the effects of changing conditions on the rate of a reaction.