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AS Chemistry > Transition Elements > Flashcards

Transition Elements Flashcards

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1
Q

What physical properties do d block elements have?

A

High melting point s
High boiling point s
Conduct electricity and heat

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2
Q

What is iron used for?

A

Construction and production of tools

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3
Q

What is copper used for?

A

Electrical cables and water pipes

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4
Q

What is titanium used for?

A

Great strength
Aerospace industry
Joint replacement s

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5
Q

What does the electron configuration of an atom show?

A

The arrangement of electrons in shells and sub shells

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6
Q

What are the two d block elements that don’t follow the normal electron configuration?

A

Chromium and copper

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7
Q

Why do chromium and copper fill differently to other elements?

A

A half filled d5 and fully filled d10 sub she’ll gives them more stability

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8
Q

What are transition elements?

A

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

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9
Q

Why are scandium and zinc not transition elements?

A

They do not form jobs with partially filled d orbitals

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10
Q

What are the characteristic properties of transition elements?

A

Form coloured compounds
Form compounds where transition metal has different oxidation states
Elements and compounds can act as catalysts

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11
Q

What is the colour of cr(III)?

A

Green

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12
Q

What is the colour of cr(VI)

A

Yellow or orange

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13
Q

What is the colour of iron(III)

A

Orange

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14
Q

What is the colour of iton(II)

A

Green

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15
Q

What colour is cobalt (II) chloride?

A

Pink purple

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16
Q

What colour is nickel (II) sulphate?

A

Green

17
Q

What is a catalyst?

A

A substance that increases the rate of a chemical reaction without itself changing

18
Q

How does a catalyst work?

A

Provides an alternative reaction pathway with a lower activation energy

19
Q

What catalyst does the haber process use?

A

Iton

20
Q

What catalyst does the contact process use?

A

Vanadium oxide

V2O5

21
Q

What catalyst does the hydrogenation of veg fats in the manufacture of margarine use?

A

Nickel

22
Q

What catalyst does the catalytic decomposition of hydrogen peroxide use?

A

Manganese oxide

MnO2

23
Q

What is a heterogenous catalyst?

A

Catalyst is in a different physical state to the reactants

24
Q

What is one of he most important properties of d block elements?

A

Can form complex ions

25
Q

When is a complex ion formed?

A

When one or more molecules or negatively charged ions bond to a central metal ion

26
Q

What is a ligand?

A

A molecule of ion that donates a pair of electrons to a central metal ion to form a coordinate/dative covalent bond

27
Q

What does the co ordination number show?

A

The number of coordinate bonds attached to the central metal ion

AS Chemistry (16 decks)

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