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RSFC Y12 CHEM 2023 > Group 2 > Flashcards

Group 2 Flashcards

1
Q

Complete the equation

Mg + H2O(l) –>

A

Mg(OH)2 + H2

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2
Q

Complete the equation

Ca + H2O(l) –>

A

Ca(OH)2 + H2

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3
Q

Complete the equation

Mg + H2O(g) –>

A

MgO + H2

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4
Q

Which is the least soluble Group 2 hydroxide?

A

Mg(OH)2

Sparingly Soluble

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5
Q

Which is the most soluble Group 2 hydroxide?

A

Ba(OH)2

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6
Q

Which is the least soluble Group 2 sulfate?

A

BaSO4

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7
Q

Which is the most soluble Group 2 sulfate?

A

MgSO4

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8
Q

What is the test for sulfate ions?

A

BaCl2

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9
Q

What is observed when BaCl2 is added to CaSO4

A

White precipitate

BaSO4 is formed

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10
Q

What is observed when barium chloride is added to sulfuric acid?

A

White precipitate

BaSO4 is formed

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11
Q

Give a medical use of barium sulfate

A

Stomach X-rays

‘Barium meal’

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12
Q

Give a use for magnesium hydroxide

A

To neutralise stomach acid

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13
Q

Magnesium chloride can be used to test for the present of which negative ions?

A

Hydroxide ions (OH-)

Mg(OH)2 will form giving a white precipitate

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14
Q

What is observed when MgCl2 is added to NaOH?

A

White precipitate

Mg(OH)2 is formed
Mg(OH)2 is sparingly soluble

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15
Q

State the trend in reactivity with water down group 2

A

Reactivity increases

Mg is least reactive, Ba is most reactive

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16
Q

What group 2 trend increase down the group?

A

Atomic radius

17
Q

What type of bonding do all group 2 elements have?

A

Metallic

18
Q

What is observed when Ba reacts with water?

A

A colourless solution and effervesence (fizzing)

19
Q

Which compound is used to treat the symptoms of indegestion?

A

Mg(OH)2

Magnesium hydroxide

20
Q

What products are formed when magnesium reacts with steam?

A

Magnesium Oxide and Hydrogen

MgO +H2

21
Q

What does sodium carbonate test for?

A

Acids

22
Q

What is observed when sodium carbonate is added to an acid?

A

Effervescence (CO2 gas is released)

23
Q

What reagent is used to test for ammounium ions?

A

Heat with NaOH

24
Q

What is observed when ammounium (NH4+) ions are heated with NaOH

A

Gas released turns red litmus paper blue

25
Q

What gas is released when ammonium ions are warmed with NaOH

A

ammonia gas (NH3)

RSFC Y12 CHEM 2023 (11 decks)

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