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CAIE A-Level Chemistry AS 10.1 Trends in Group 2 Metals and Compounds Questions

Practise Group 2 reaction equations and trends in reactivity, thermal stability and compound solubility, using decomposition and periodic patterns to predict chemical behaviour.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • write reactions of Group 2 metals and compounds with oxygen, water and dilute acids
  • compare nitrate and carbonate thermal stability and identify the gaseous decomposition products
  • use opposing hydroxide and sulfate solubility trends to identify or predict a Group 2 element

Covered syllabus points

10.1.1—Reactions of the elements with oxygen10.1.2—Reactions of the oxides, hydroxides10.1.3—Thermal decomposition trends10.1.4—Describe, and make predictions10.1.5—Variation in the solubilities

Question 1

[Maximum number: 1]

Which row correctly describes the separate reactions of calcium and strontium with water?

substance reduced

substance oxidised

more vigorous reaction

calcium or strontium

water

calcium + water

calcium or strontium

water

strontium + water

water

calcium or strontium

calcium + water

water

calcium or strontium

strontium + water

Question 2

[Maximum number: 1]

Dolomite is a double carbonate, CaMg(CO3)2\mathrm{CaMg}\left(\mathrm{CO}_{3}\right)_{2}, and can be used instead of calcium carbonate for treating acidic soils.

The three statements all refer to the agricultural use of these carbonates.
1 Dolomite and calcium carbonate are both less soluble than Ca(OH)2\mathrm{Ca}(\mathrm{OH})_{2}.
2 One mole of dolomite has the same neutralising effect as one mole of calcium carbonate.

3 Dolomite and calcium carbonate both increase the pH of acidic soils.
Which statements are correct?

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Question 3

[Maximum number: 1]

What is the total volume of gas produced, measured at room conditions, when 0.010 mol of anhydrous magnesium nitrate is completely decomposed by heating?

A

240 cm3240 \mathrm{~cm}^{3}

B

480 cm3480 \mathrm{~cm}^{3}

C

600 cm3600 \mathrm{~cm}^{3}

D

720 cm3720 \mathrm{~cm}^{3}

All question bank results loaded