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Chemistry 5070 · Cambridge (CAIE) O Level

Thermal Decomposition

7 past-paper questions on Thermal Decomposition · examined 2020–2024.

20243 questions

5070/21 · M/J · Q1(c) [1]Sign up to mark my answer →

State which substance changes from a blue solid to a white solid when heated.

5070/31 · M/J · Q3 [6]Sign up to mark my answer →

Plan an experiment to determine the percentage loss in mass when barium carbonate is heated. Include apparatus, method, accuracy procedures, and calculations.

5070/41 · M/J · Q4 [6]Sign up to mark my answer →

Plan an experiment to determine the percentage loss in mass when barium carbonate is heated.

20213 questions

5070/21 · M/J · Q4(e) [1]Sign up to mark my answer →

A sample of copper(II) carbonate is heated strongly. Name the products of this reaction.

5070/42 · M/J · Q1(a)(i) [1]Sign up to mark my answer →

Suggest why a crucible is used instead of a glass beaker.

5070/42 · M/J · Q1(a)(ii) [1]Sign up to mark my answer →

Suggest why 3 and 4 are repeated until the same mass is recorded twice.

20201 question

5070/21 · M/J · Q2(b) [1]Sign up to mark my answer →

A sample of manganese(II) carbonate, MnCO3, is heated strongly. Construct the equation for this reaction.

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