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Edexcel GCSE Chemistry - Pirated > Topic 5b Transition metals and alloys > Flashcards

Topic 5b Transition metals and alloys Flashcards

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1
Q

1 Which are usually good conductors of electricity, metals or non-metals?

A

metals

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2
Q

2 What can you say about the melting points of metals compared with non-metals?

A

They are high.

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3
Q

3 Are most metals shiny or dull when freshly cut?

A

shiny

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4
Q

4 Why do lumps of most metals sink in water?

A

They have high densities/are denser than water.

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5
Q

5 What gas is produced when a metal reacts with an acid?

A

hydrogen

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6
Q

6 What catalyst is used in the Haber process?

A

iron

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7
Q

7 What orange-brown substance is formed when iron reacts with air and water?

A

rust/hydrated iron(III) oxide

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8
Q

8 What happens to the mass of a catalyst when it catalyses a chemical reaction?

A

It stays the same.

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9
Q

9 The melting point of a substance is 39 °C and its boiling point is 356 °C. What is its state at room temperature?

A

liquid (it has melted but it hasnt yet boiled)

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10
Q

10 What non-metal element is used to extract iron from iron ore?

A

carbon

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11
Q

11 In which part of the periodic table is iron placed?

A

transition metals

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12
Q

12 What can you say about the melting point of a typical transition metal?

A

It is high.

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13
Q

13 What is oxidation?

A

gain of oxygen/loss of electrons

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14
Q

14 What colour is rust?

A

brown/orange-brown

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15
Q

15 What gas element is needed for iron to rust?

A

oxygen

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16
Q

16 What colourless compound is needed for iron to rust?

A

water

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17
Q

17 Which is more reactive, zinc or iron?

A

zinc

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18
Q

18 Which is more reactive, copper or iron?

A

iron

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19
Q

19 Is common salt, sodium chloride, needed for iron to rust?

A

no

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20
Q

20 When a metal corrodes, is it oxidised or reduced?

A

oxidised

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21
Q

21 Are metals shiny or dull when freshly cut?

A

shiny

22
Q

22 In general, what can you say about the densities of transition metals?

A

They are high.

23
Q

23 When metals corrode, are they oxidised or reduced?

A

oxidised

24
Q

24 What two substances are needed for iron to rust?

A

oxygen/air and water

25
Q

25 Which metal is used in sacrificial protection of iron: zinc or tin?

A

zinc (zinc is more reactive than iron)

26
Q

26 What is the common name for hydrated iron(III) oxide?

A

rust

27
Q

27 Which method of rust prevention is most suitable for a car engine: painting, oiling or coating with plastic?

A

oiling

28
Q

28 Are metal ions positively charged or negatively charged?

A

positively charged

29
Q

29 What name is given to the negative electrode in electrolysis?

A

cathode (PANIC!)

30
Q

30 What name is given to the liquid through which a current flows during electrolysis?

A

electrolyte

31
Q

31 How are the atoms arranged in a piece of solid metal?

A

regularly/in layers/in a lattice/close together

32
Q

32 Which metal is more reactive, iron or zinc?

A

zinc

33
Q

33 Is the corrosion of a metal an example of oxidation, or reduction?

A

oxidation

34
Q

34 What is the corrosion of iron called?

A

rusting

35
Q

35 Give one reason for electroplating a metal object with another metal.

A

to improve its appearance/corrosion resistance

36
Q

36 Why is stainless steel used for cutlery and kitchen sinks?

A

It does not rust.

37
Q

37 Which metal has the higher melting point, iron or magnesium?

A

iron

38
Q

38 Which metal has the higher density, sodium or iron?

A

iron

39
Q

39 Which metal is more suitable for the sacrificial protection of iron; copper or zinc?

A

zinc

40
Q

40 Between which two groups in the periodic table are the transition metals placed?

A

groups 2 and 3

41
Q

41 Which metal is more reactive, copper or gold?

A

copper

42
Q

42 Compared with other metals, do transition metals have high density or low density?

A

high density

43
Q

43 Iron(II) chloride exists as green crystals. How can you tell that iron is a transition metal?

A

It forms coloured compounds.

44
Q

44 Mercury melts at -39 °C. Why is this unusual?

A

It is a metal/metals are usually solid/have high melting points.

45
Q

45 Why is stainless steel an alloy?

A

It is a mixture of metals.

46
Q

46 What often happens to the strength of a metal when it is converted into an alloy?

A

It increases/gets stronger.

47
Q

47 Name the process that uses electricity to put a thin coat of a metal on another metal.

A

electroplating

48
Q

48 What happens to iron if it is exposed to air and water?

A

It rusts/corrodes.

49
Q

49 Give one common use of gold.

A

jewellery/electrical connectors/coins or bars for investment

50
Q

50 Which is stronger, wrought iron or steel?

A

steel

Edexcel GCSE Chemistry - Pirated (13 decks)

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