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Chemistry Unit2 WJEC GCSE (with triple content) > Chemical Bonding, Structures and Properties > Flashcards

Chemical Bonding, Structures and Properties Flashcards

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1
Q

ionic bonding

A

non-metal + metal

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2
Q

metallic bonding

A

metal + metal

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3
Q

covalent bonding

A

non-metal + non-metal

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4
Q

why are metals conductive?

A

due to the sea of delocalised electrons

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5
Q

define a chemical bond

A

a chemical bond is an electrostatic force of attraction between elements with a positive and negative charge

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6
Q

what is the point of chemical bonding

A

chemical bonding occurs for atoms to get a stable electron configuration

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7
Q

giant covalent

A

high melting point

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8
Q

simple covalent

A

low melting point (small molecules)

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9
Q

what is ionic bonding

A

an electrostatic attraction between oppositley charged ions

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10
Q

metals…. electrons to get a full outer shell

A

lose

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11
Q

non-metals…. electrons to get a full outer shell

A

gain

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12
Q

how are metals arranged

A

in a lattice

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13
Q

sodium has…. outer electron

A

1
therefore each atom releases 1 electron into the sea of electrons

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14
Q

Magnesium has …. outer electrons

A

2
therefore each atom releases 2 electron into the sea of electrons

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15
Q

Aluminium has… outer electrons

A

3
therefore each atom releases 3 electron into the sea of electrons

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16
Q

why do giant ionic structures conduct electricity when molten

A

because ions are free to move

17
Q

how to drawn ionic bonding

A

dot and cross diagram

18
Q

how to draw covalent bonding

A

dot and cross diagram but with overlapping orbital

19
Q

what is covalent bonding

A

a shared pair of electrons

20
Q

examples of giant covalent structures

A

graphite and diamond

21
Q

uses of diamond

A

cutting things (it is hard)(high melting point)

22
Q

uses of graphite

A

pencils + lubricant (layers slide)

23
Q

how is graphite arranged

A

forms hexagonal layers

24
Q

what element is diamond and graphite made of

A

carbon

Chemistry Unit2 WJEC GCSE (with triple content) (15 decks)

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