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Ma Decks > Chemistry - Yr8 - Revision > Flashcards

Chemistry - Yr8 - Revision Flashcards

1
Q

Where are metals found in the periodic table?

A

To the left of the stepped line.

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2
Q

Where are non metals found in the periodic table?

A

To the right of the stepped line.

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3
Q

What are the physical properties of a typical metal?

A

Good conductor of electricity, Good conductor of heat, Shiny, High density, Malleable, Ductile, Sonorous

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4
Q

What is meant by high density?

A

Heavy for its size

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5
Q

What is meant by malleable?

A

Something can be hammered into a shape

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6
Q

What is meant by ductile?

A

Something that can be stretched into a wire

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7
Q

What is meant by sonorous?

A

Something that makes a ringing sound when hit

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8
Q

What are the properties of a typical non-metal?

A

Poor conductor of electricity, Poor conductor of heat, Dull, Low density, Brittle, Not sonorous

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9
Q

What is meant by brittle?

A

Breaks easily

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10
Q

What is meant by low density?

A

light for its size

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11
Q

Which state are all metals apart from 1?

A

Solid (mercury is liquid)

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12
Q

What do we call elements that are near the stepped line on the periodic table?

A

Metalloids

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13
Q

Compare the melting points of metals and non metals.

A

Most metals have high melingl points, Most non metals have low melting points

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14
Q

What is meant by ‘chemical properties’ of an element?

A

How well it reacts with other elements

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15
Q

When a metal or non metal react with oxygen they form an…

A

oxide

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16
Q

Metal oxides dissolve in water to make

A

alkaline solutions

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17
Q

Non-metal oxides dissolve in water to make

A

acidic solutions

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18
Q

What do we call columns of the periodic table?

A

Groups

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19
Q

What do we call rows of the periodic table?

A

Periods

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20
Q

When we look down a group or across a period there are _______ in properties such as melting point, boiling point and density.

A

patterns

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21
Q

By looking at patterns down a group or across a period of the periodic table we can make ________ about unknown elements in that group

A

predictions

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22
Q

What are the group1 elements also known as?

A

The alkali metals

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23
Q

Name the first three group 1 elements

A

Lithium Sodium Potassium

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24
Q

Identify the Element: Li

A

Lithium

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25
Q

Identify the Element: Na

A

Sodium

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26
Q

Identify the Element: K

A

Potassium

27
Q

Describe the chemical properties of the group 1 elements.

A

They are reactive metals

28
Q

Describe the physical properties of the group 1 elements

A

Good conductors of heat/electricity, Shiny when cut

29
Q

What happens to the melting/boiling point of the group 1 metals as you move down the group?

A

It decreases

30
Q

What happens to the reactivity of the group 1 elements as you move down the group?

A

They become more reactive

31
Q

What is the general equation of the group 1 elements reacting with water?

A

Metal + Water –> Metal Hydroxide + Hydrogen

32
Q

How can we test for hydrogen gas?

A

Light a splint near the gas. A squeaky pop means that the gas is hydrogen.

33
Q

Name the gas produced when a group 1 metal reacts with water.

A

Hydrogen

34
Q

Name the compound formed when a metal reacts with water

A

metal hydroxide

35
Q

By what name are the elements of group 7 sometimes called?

A

The halogens

36
Q

Name the first three elements of group 7

A

Fluorine, Chlorine, Bromine

37
Q

Give some of the physical properties of the group 7 elements.

A

Non metals so:Low melting/boiling points, Do not conduct electricity

38
Q

Identify the element: F

A

Fluorine

39
Q

Identify the element: Cl

A

Chlorine

40
Q

Identify the element: Br

A

Bromine

41
Q

Identify the element: I

A

Iodine

42
Q

What happens to the melting point of the group 7 elements as you move down the group?

A

It increases

43
Q

What happens to the colour of the group 7 elements as you move down the group?

A

They get darker

44
Q

What happens to the reactivity of the group 7 elements as you move down the group?

A

The elements become less reactive as you move down the group

45
Q

Iron + Fluorine –> ?

A

Iron Fluoride

46
Q

Iron + Chlorine –> ?

A

Iron Chloride

47
Q

Iron + Bromine –> ?

A

Iron Bromide

48
Q

What is a displacement reaction?

A

When a more reactive element takes the place of a less reactive element in a compound

49
Q

Iron Bromide + Fluorine –>

A

Iron Bromide + Fluorine –> Iron Fluoride + Bromine because fluorine is more reactive than bromine

50
Q

By what other name are the group 0 elements known?

A

The noble gases

51
Q

name the first three elements of group 0 (the noble gases)

A

Helium, Neon, Argon

52
Q

Identify the element: He

A

Helium

53
Q

Identify the element: Ne

A

Neon

54
Q

Identify the element: Ar

A

Argon

55
Q

What is the state of the group 0 elements?

A

Colourless gases

56
Q

The melting/boiling points of the group 0 elements are very ____

A

low

57
Q

What happens when you pass an electric current through the group 1 elements?

A

They glow brightly

58
Q

Neon gas is used in…

A

fluorescent signs

59
Q

Helium gas is used in…

A

balloons

60
Q

Which group 0 elements has a lower density than air?

A

Helium

61
Q

Which group 0 element is a better insulator than air so is used in double glazing?

A

Argon

62
Q

The group 0 elements are extremely unreactive so we say that they are…

A

stable

63
Q

Although they are unreactive, reactivity increases as you move _____ the group 0 elements.

A

down

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