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Ma Decks > Chemistry - Yr8 - Revision > Flashcards

Chemistry - Yr8 - Revision Flashcards

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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
Identify the Element: Na
Sodium
26
Identify the Element: K
Potassium
27
Describe the chemical properties of the group 1 elements.
They are reactive metals
28
Describe the physical properties of the group 1 elements
Good conductors of heat/electricity, Shiny when cut
29
What happens to the melting/boiling point of the group 1 metals as you move down the group?
It decreases
30
What happens to the reactivity of the group 1 elements as you move down the group?
They become more reactive
31
What is the general equation of the group 1 elements reacting with water?
Metal + Water --> Metal Hydroxide + Hydrogen
32
How can we test for hydrogen gas?
Light a splint near the gas. A squeaky pop means that the gas is hydrogen.
33
Name the gas produced when a group 1 metal reacts with water.
Hydrogen
34
Name the compound formed when a metal reacts with water
metal hydroxide
35
By what name are the elements of group 7 sometimes called?
The halogens
36
Name the first three elements of group 7
Fluorine, Chlorine, Bromine
37
Give some of the physical properties of the group 7 elements.
Non metals so:Low melting/boiling points, Do not conduct electricity
38
Identify the element: F
Fluorine
39
Identify the element: Cl
Chlorine
40
Identify the element: Br
Bromine
41
Identify the element: I
Iodine
42
What happens to the melting point of the group 7 elements as you move down the group?
It increases
43
What happens to the colour of the group 7 elements as you move down the group?
They get darker
44
What happens to the reactivity of the group 7 elements as you move down the group?
The elements become less reactive as you move down the group
45
Iron + Fluorine --> ?
Iron Fluoride
46
Iron + Chlorine --> ?
Iron Chloride
47
Iron + Bromine --> ?
Iron Bromide
48
What is a displacement reaction?
When a more reactive element takes the place of a less reactive element in a compound
49
Iron Bromide + Fluorine -->
Iron Bromide + Fluorine --> Iron Fluoride + Bromine because fluorine is more reactive than bromine
50
By what other name are the group 0 elements known?
The noble gases
51
name the first three elements of group 0 (the noble gases)
Helium, Neon, Argon
52
Identify the element: He
Helium
53
Identify the element: Ne
Neon
54
Identify the element: Ar
Argon
55
What is the state of the group 0 elements?
Colourless gases
56
The melting/boiling points of the group 0 elements are very ____
low
57
What happens when you pass an electric current through the group 1 elements?
They glow brightly
58
Neon gas is used in...
fluorescent signs
59
Helium gas is used in...
balloons
60
Which group 0 elements has a lower density than air?
Helium
61
Which group 0 element is a better insulator than air so is used in double glazing?
Argon
62
The group 0 elements are extremely unreactive so we say that they are...
stable
63
Although they are unreactive, reactivity increases as you move _____ the group 0 elements.
down

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