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IGCSE STUDYING > Chemestry Group > Flashcards

Chemestry Group Flashcards

1
Q

What two elements do you draw a line to connect that shows you where metals end and nonmetals start

A

Boron to radon

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2
Q

what side of the line is metals

A

left side

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3
Q

what is the right side called

A

non metals

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4
Q

what are the elements on the line called

A

semi metals

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5
Q

What color are metals

A

Silver

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6
Q

what are the expetions to the rule of color for metals

A

gold and copper

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7
Q

What are non metals souble in

A

Non-polar substances (except for Si and Co)

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8
Q

is group 8 reactive or unreative

A

unreactive becuase it is very difficult for them to lose or gain electrons becuase of full outer shell

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9
Q

group eight color

A

clear gas

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10
Q

Is group eight dense

A

No

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11
Q

what are group eights metilng and boiling points

A

very low

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12
Q

transition metals melting points

A

very high (except mercury)

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13
Q

transtion metals reactivity

A

less reactive than metals in group one and 2

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14
Q

What do transition metals often act as

A

cataylsts

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14
Q

what is a displacement reaction

A

when a more reactive substance replaces a less reactive substance in a compound

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15
Q

what can metals only replace in displacement reactions

A

other metals

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16
Q

what can non metals only replace in displacement reactions

A

other non metals

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17
Q

what does group seven naturally exist as

A

diatonic molecules

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18
Q

which way are groups

A

verctical

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19
Q

physical properties of group one metals

A

soft light gray and shiny when cut with knife

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20
Q

what is the density of group one metals

A

low

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21
Q

what do group one metals reactive with

A

a basic solution and hydrogen gas

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22
Q

what happens to the melting and boiling points of group one as you go down

A

they decrease

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23
Q

what happens to the reactivity of group one as you go down

A

it increases becuase its easier for the outer shell to lose its electron due to how far away it is away from the nucleus

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24
Q

what happens to reactivity in group seven as you go down

A

they decrease becuase its harder for the atoms to gain the electrons they need becuase of the weaker electrostatic charges caused by distance

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25
Q

what do group seven naturally exist as

A

diatonic

26
Q

what happens to melting and boiling points in group seven as you go down

A

they increase

27
Q

what happens to density of group one metals as you go down

A

it increases

28
Q

when you put universal indicator into an alkai solution what color will it be

A

blue

29
Q

what is a halides

A

compounds formed between an element an a halogen

30
Q

name three features of transition metals

A

hard and strong high density and high melting and boiling points

31
Q

what type of bonding is metal oxide

A

Ionic

32
Q

what type of bonding is non metal oxide

A

covalent

33
Q

ph of metal oxide in a solution

A

basic so blue

34
Q

what are not metal oxides at room temprature

A

usually gasess

35
Q

can metal oxides conduct electricty

A

only as a liquid or solution

36
Q

can non metal oxides conduct electricty

A

No

37
Q

two non metals bonding

A

covalent

38
Q

metal and non metal bonding

A

ionic

39
Q

Mgo is

A

a white powder

40
Q

what color does UI turn in acid or netural solution?

A

Red

41
Q

what is the charge for most transition metals

A

2+

42
Q

how do you draw charges for ionic bonding

A

3- or 3+

43
Q

are ionic compounds soluble in water

A

often

44
Q

why are ionic compounds soluble in water?

A

water is attracted to charged ions and therefore many of the ionic solids dissolve

45
Q

chemical propertie of group seven

A

their all poisonous

46
Q

what happens to the alkali metals physically as you go down

A

the metals get softer

47
Q

what does chlorine look like

A

A green gas and pale yellow in a soulution

48
Q

metal+water=?

A

metal hydroxide+ hydrogen

49
Q

does melting points decrease or increase as you go down group one

A

decrease

50
Q

does softness decrease or increase as you go down group one

A

increase

51
Q

what happens when you put lithium in water

A

it moves around and dissolves to make a colorless solution

52
Q

what happens when you dissolve sodium in water

A

same thing as lithium just faster

53
Q

what happens if you put sodium in water ontop of a filter paper

A

it starts a fire

54
Q

what happens if you put potassium in water

A

it makes a lilac flame

55
Q

are halogens reactive

A

Yes

56
Q

what happens to the toxicty as you go down group 7

A

it decreases

57
Q

what color is flourine gas

A

pale yellow

58
Q

what color is bromine gas

A

orange

59
Q

what color is iodine gas

A

purple

60
Q

what color is iodine as a solid

A

silver gray

61
Q

what color is bromine as a liquid

A

red/brown

62
Q

what happens to iodine in starch

A

it turns blue or black

IGCSE STUDYING (26 decks)

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