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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: 4]

Question (a)

(a)

State what is observed when dilute hydrochloric acid is added to separate samples of barium oxide and barium carbonate.
barium oxide
barium carbonate

[ 2 ]

Question (b)

(b)

Write an equation for the reaction of strontium, Sr , with an excess of cold water.

[ 1 ]

Question (c)

(c)

State the variation in solubility of the Group 2 sulfates down the group.

[ 1 ]

Question 2

[Maximum number: 1]

Nitrogen and phosphorus are elements in Group 15 of the Periodic Table.

Nitrogen is found in inorganic compounds such as nitrogen oxides ( NOx\mathrm{NO}_{x} ), nitrates and nitric acid.

Describe what is seen when solid calcium nitrate is heated strongly.

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