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GCSE Chemistry > Bonding > Flashcards

Bonding Flashcards

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1
Q

Noble gases

A

Noble gases are inert (they don’t react) since they have stable electronic structures. Other elements react by forming bonds which gives them noble gas electronic structures.

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2
Q

Ion

A

An atom that has lost/gained electrons in order to obtain a full outer shell

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3
Q

Cation

A

A positive ion

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4
Q

Anion

A

Negative ion

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5
Q

Molecular ion

A

Ions composed of two or more atoms covalently bonded

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6
Q

Ionic Bonding

A

Bonding that occurs between metals and non-metals, the electrons are transferred from a metal to a non-metal

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7
Q

NaCl

A

One electron transferred from Na to Cl

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8
Q

MgCl2

A

Two electrons transferred from Mg to 2 separate Cl, one electron to each Cl

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9
Q

Ionic Bond

A

Attraction between ions of opposite charge

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10
Q

Covalent Bonding

A

Covalent bonding occurs between two non-metal atoms e.g. elements from groups 4-7, both needing to gain electrons to reach full shells. To manage this they have to share electrons from their outer shells in pairs

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11
Q

Covalent bond

A

Bond formed by sharing a pair of electrons

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12
Q

Molecule

A

Molecules contain two or more atoms covalently bonded

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13
Q

Diatomic

A

Diatomic means that there are two atoms covalently bonded in the molecule

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14
Q

Examples of molecular formula

A

Cl2 or O2

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15
Q

Examples of structural formula

A

Cl-Cl or O=O

No. of lines = no. of pairs of electrons

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16
Q

Metallic Bonding

A

Attraction between delocalised electrons and the positive ions in a regular lattice

17
Q

Water (H2O) structural formula

A

H - O
|
H

18
Q

Ammonia (NH3) structural formula

A

H - N - H
|
H

19
Q

Methane (CH4) structural formula

A 
H
      |
H - C - H
      |
      H
20
Q

Carbon dioxide (CO2) structural formula

A

O=C=O

GCSE Chemistry (7 decks)

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