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Edexcel GCSE Chemistry > Topic 10 Qualitative and materials > Flashcards

Topic 10 Qualitative and materials Flashcards

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1
Q

1 To which group in the periodic table do lithium, sodium and potassium belong?

A

group 1

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2
Q

2 To get a hot blue Bunsen burner flame, do you open or close the air hole?

A

open it

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3
Q

3 What is the formula for a calcium ion?

A

Ca2+

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4
Q

4 Which of these is a transition metal: copper or calcium?

A

copper

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5
Q

5 Name the metal ions present in KCl, K2SO4 and KNO3.

A

potassium/K+

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6
Q

6 What name is given to the rainbow of colours seen when white light passes through a prism?

A

spectrum

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7
Q

7 What is the concentration of the solution formed by dissolving 1 g of salt in 2 dm3 of water?

A

0.5 g dm–3

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8
Q

8 What colour flame do you see when potassium reacts with water?

A

lilac

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9
Q

9 Is calcium chloride a covalent compound or an ionic compound?

A

ionic

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10
Q

10 Which of these compounds is soluble in water: sodium carbonate or calcium carbonate?

A

sodium carbonate

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11
Q

11 Give the flame test colour for sodium ions, Na+.

A

yellow

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12
Q

12 Which metal ion produces a blue-green flame test colour?

A

copper

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13
Q

13 Which metal ion produces an orange-red flame test colour?

A

calcium

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14
Q

14 Give the flame test colour for potassium ions, K+.

A

lilac

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15
Q

15 Give one way that instrumental methods improve the analysis of substances.

A

more sensitive/more accurate/faster

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16
Q

16 The flame photometer is used to find the concentration of ions. What else is it used for?

A

to identify ions

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17
Q

17 Name the type of graph needed to find the concentration of ions when using a flame photometer.

A

calibration curve

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18
Q

18 A substance turns red litmus paper blue. What does this tell you about the substance?

A

it is alkaline/an alkali

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19
Q

19 Which ion has the formula NH4+?

A

ammonium ion

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20
Q

20 Which of these substances is insoluble in water: aluminium hydroxide or sodium hydroxide?

A

aluminium hydroxide

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21
Q

21 Give the flame test colour for copper ions.

A

blue-green

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22
Q

22 Which metal ion produces a yellow flame test colour?

A

sodium

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23
Q

23 What colour is the precipitate produced when sodium hydroxide is added to Fe2+ ions?

A

green

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24
Q

24 Which white precipitate disappears to form a colourless solution when excess sodium hydroxide is added: aluminium hydroxide or calcium hydroxide?

A

aluminium hydroxide

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25
Q

25 What colour is the precipitate produced when sodium hydroxide is added to copper ions?

A

blue

26
Q

26 In the chemical test for ammonia gas, should the red litmus paper be dry or damp?

A

damp

27
Q

27 What solution turns milky in the chemical test for carbon dioxide?

A

limewater

28
Q

28 Which ion has the formula SO42–?

A

sulfate ion

29
Q

29 Which of these substances is insoluble in water: sodium chloride or silver chloride?

A

silver chloride

30
Q

30 What gas is produced when calcium carbonate reacts with dilute hydrochloric acid?

A

carbon dioxide

31
Q

31 Are metals shiny or dull when freshly cut?

A

shiny

32
Q

32 What type of bond (ionic, metallic or covalent) involves a pair of electrons?

A

covalent

33
Q

33 When a substance is compressed, is it being squashed or stretched?

A

squashed

34
Q

34 Can you see through an opaque substance?

A

no

35
Q

35 Which element forms long chains in simple polymers such as polyethene

A

carbon

36
Q

36 Which is a better electrical conductor: metal or brick?

A

metal

37
Q

37 What name is given to a mixture of metals?

A

alloy

38
Q

38 Is solid glass malleable, ductile or brittle?

A

brittle

39
Q

39 Which is a better thermal conductor: polyehene or copper?

A

copper

40
Q

40 What type of bond ionic, metallic or covalent) involves the transfer of electrons?

A

ionic

41
Q

41 Which substance is a better electrical conductor: PVC or copper?

A

copper

42
Q

42 What word describes a substance that can be hammered or rolled into shape?

A

malleable

43
Q

43 What word describes a substance that can be stretched into wires?

A

ductile

44
Q

44 When a substance is under tension, is it being squashed or stretched?

A

stretched

45
Q

45 Can you see clearly through a transparent substance?

A

yes

46
Q

46 What metal forms the rods inside reinforced concrete?

A

steel/iron

47
Q

47 Which is denser: steel or polyethene?

A

steel

48
Q

48 What are the thin strands in fibreglass made from?

A

glass

49
Q

49 Name the type of material that consists of thin sheets of wood glued together.

A

plywood

50
Q

50 What hard material is made by mixing cement, sand, small stones and water together?

A

concrete

51
Q

51 Is a molecule larger than an atom?

A

yes

52
Q

52 Which reacts faster with an acid: limestone as a powder or as a lump?

A

powder

53
Q

53 What does a catalyst do to the rate of a reaction?

A

(increases/changes it

54
Q

54 Are clay ceramics electrical conductors or insulators?

A

insulators

55
Q

55 What is the main property of glass that makes it suitable for window panes?

A

it is transparent.

56
Q

56 What is the symbol for a nanometre?

A

nm

57
Q

57 How many nanometres are there in a metre?

A

thousand million/billion/109

58
Q

58 What three measurements do you need to calculate the surface area of a cuboid?

A

length, width, height

59
Q

59 What measurement do you need to calculate the volume of a cube?

A

length of a side

60
Q

60 How much catalyst is left at the end of a reaction?

A

all of it/the same as at the start

Edexcel GCSE Chemistry (13 decks)

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