Question 1

Going from calcium to barium in group 2, which property changes as stated?

  A  

ionic radius decreases

  B  

first ionisation energy decreases

  C  

melting temperature increases

  D  

reactivity with water decreases

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Question 2

The properties of group 2 compounds change down the group from magnesium to barium.

Which statement is correct?

  A  

solubility of group 2 sulfates increases

  B  

solubility of group 2 hydroxides decreases

  C  

thermal stability of group 2 nitrates increases

  D  

thermal stability of group 2 carbonates decreases

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Question 3

Which property of group II elements (beryllium to barium) decreases with increasing atomic number?

  A  

reactivity with water

  B  

second ionisation energy

  C  

solubility of hydroxides

  D  

stability of the carbonates

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Question 4

Why does barium react more rapidly with cold water than magnesium does?

  A  

barium atoms are larger and form ions more easily than magnesium atoms

  B  

barium floats on the surface of the water but magnesium sinks in the water

  C  

barium hydroxide is less soluble than magnesium hydroxide

  D  

the sum of the 1st and 2nd ionisation energies of barium is more than that for magnesium

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Question 5

The group 2 elements react with water, forming a solution and a gas.

Which statement is correct?

  A  

the reactivity of the elements decreases down group 2

  B  

the pH of the solution formed increases down group 2

  C  

the reaction is a neutralisation

  D  

the equation for the reaction of strontium with water is: 2Sr + 2H2O ➔ 2SrOH + H2

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Question 6

Which statement is not correct?

  A  

strontium has a lower first ionisation energy than calcium

  B  

strontium has a larger ionic radius than calcium


  C  

strontium reacts less vigorously with water than calcium


  D  

strontium hydroxide is more soluble in water than calcium hydroxide

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Question 7

Which property of the group 2 elements, Ca to Ba, increases with increasing atomic number?

  A  

atomic radius

  B  

electronegativity

  C  

first ionisation energy

  D  

melting point

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Question 8

What is the correct observation when barium metal is added to an excess of water?

  A  

forms a colourless solution only

  B  

forms a colourless solution and effervesces

  C  

forms a white precipitate only

  D  

forms a white precipitate and effervesces

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