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Chemistry Topic 3 > 3.1.2- Group 2 > Flashcards

3.1.2- Group 2 Flashcards

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1
Q

What is the trend in atomic radius down group 2?

A

Atomic radius increases as you go down due to increased shielding

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2
Q

What is the trend in reactivity as you go down the group?

A

Reactivity increases due to increased shielding and atomic radius

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3
Q

What is the trend in ionisation energy as you go down the group?

A

Decrease down the group due to greater atomic radius and increased shielding

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4
Q

How do group 2 metals react with water?

A

Form a metal hydroxide and hydrogen

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5
Q

What is the trend in reactivity with water down the group?

A

Reactivity increases

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6
Q

How can reactions with water be sped up?

A

Use steam

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7
Q

How do metal oxides of group 2 elements react with water?

A

They form metal hydroxides

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8
Q

What is the trend of the alkalinity of the metal hydroxides formed as you go down the group?

A

Alkalinity increases as the solubility of metal hydroxides increases

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9
Q

How do group 2 metals react with chlorine gas?

A

Form metal chlorides, which are white precipitates

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10
Q

How do group 2 metals react with oxygen?

A

Form oxides

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11
Q

How do group 2 metals react with dilute acids?

A

Produce bubbles of hydrogen gas and metal compounds (salt)

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12
Q

How do group 2 hydroxides react with dilute acids?

A

Form salt and water

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13
Q

What is the trend of solubility as you go down the group?

A

Increases down the group

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14
Q

What is Mg(OH)2 and CaCO3 used for?

A

As an antacid to treat indigestion

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15
Q

What is Ca(OH)2 used for?

A

In agriculture to neutralise acidic soils

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16
Q

What is the trend in solubility of group 2 sulfates down the group?

A

Decrease in solubility down the group

17
Q

Why is the insolubility of barium sulfate useful?

A

Useful in medicine as barium meals (medical tracers to allow internal tissues and organs to be imaged)

18
Q

What test is barium chloride used for?

A

To test for sulfate ions as it reacts to form barium sulfate which forms a white ppt

19
Q
A

Chemistry Topic 3 (7 decks)

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