Predicting chemical reactions

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Question 25
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A student investigates the reactions of three different Group 2 metals (X,Y, X, Y,\,X,Y, and ZZZ) with water or steam.

  • Metal X X\,X reacts extremely slowly with cold water but burns with a white flame in steam to form a white solid oxide.
  • Metal Y Y\,Y reacts steadily with cold water, forming a cloudy suspension and releasing a gas.
  • Metal Z Z\,Z reacts vigorously with cold water to form a clear, strongly alkaline solution and releasing a gas.

Which option correctly identifies metals X,Y, X, Y,\,X,Y, and ZZZ?

X=CalciumX = \text{Calcium}X=Calcium, Y=MagnesiumY = \text{Magnesium}Y=Magnesium, Z=BariumZ = \text{Barium}Z=Barium

X=MagnesiumX = \text{Magnesium}X=Magnesium, Y=BariumY = \text{Barium}Y=Barium, Z=CalciumZ = \text{Calcium}Z=Calcium

X=MagnesiumX = \text{Magnesium}X=Magnesium, Y=CalciumY = \text{Calcium}Y=Calcium, Z=BariumZ = \text{Barium}Z=Barium

X=BariumX = \text{Barium}X=Barium, Y=CalciumY = \text{Calcium}Y=Calcium, Z=MagnesiumZ = \text{Magnesium}Z=Magnesium

Predicting chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /Predicting chemical reactions