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OCR Gateway A Level Chemistry > 24.1 D-Block Elements > Flashcards

24.1 D-Block Elements Flashcards

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1
Q

Where are the d block elements found?

A

Between group 2 and group 13 of the periodic table

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2
Q

Typical properties of d block elements

A

High MP and BP
Shiny
Conduct electricity and heat

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3
Q

Uses of Copper

A

Coins
Electrical cables
Water pipes

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4
Q

Uses of Zinc and Nickel

A

Coins

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5
Q

Uses of Titanium

A

Aerospace industry
Joint replacement
Cosmetic dentistry

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6
Q

Uses of Iron

A

Construction
Production of tools

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7
Q

4s and 3d subshell

A

3d subshell has greater energy
4s orbital fills first
4s orbital empties first

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8
Q

Transition elements

A

D block elements that form at least one ion with a partially filled d orbital

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9
Q

D block elements that are not transition elements

A

Zinc
Scandium

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10
Q

Ion formed by Scandium

A

Sc3+

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11
Q

Ion formed by Zinc

A

Zn2+

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12
Q

Properties of transition elements

A

Can have different oxidation states
Form coloured compounds
Elements and compounds can act as catalysts

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13
Q

Oxidation states across transition elements

A

Increases until Manganese and then decreases

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14
Q

Which ion do all transition elements form?

A

2+

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15
Q

Potassium Dichromate (VI) colour

A

Bright orange

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16
Q

Cobalt (II) Chloride colour

A

Pink-purple

17
Q

Hydrated Copper (II) Sulfate colour

A

Blue

18
Q

Iron (II) colour

A

Pale green

19
Q

Iron (III) colour

A

Yellow

20
Q

Cr (III) colour

A

Green

21
Q

Cr (VI) colour

A

Yellow or orange

22
Q

Haber process & catalyst

A

N2 + 3H2 >< 2NH3
Iron

23
Q

Contact process & catalyst

A

2SO2 + O2 >< 2SO3
Vanadium (V) Oxide, V2O5

24
Q

Hydrogenation catalyst

A

Nickel

25
Q

Decomposition of Hydrogen Peroxide & catalyst

A

2H2O2 > 2H2O + O2
Manganese (IV) Oxide MnO2

26
Q

Heterogeneous catalyst

A

Catalyst is a different state to the reactants

27
Q

Homogeneous catalyst

A

Catalyst is the same state as the reactants

28
Q

What catalyses the reaction between zinc and acids?

A

Cu2+ ions

OCR Gateway A Level Chemistry (46 decks)

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