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Chemistry GCSE Key Terms > C2.2 Bonding > Flashcards

C2.2 Bonding Flashcards

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1
Q

Acidic

A

having a pH value less than 7

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2
Q

Alkaline

A

having a pH value greater than 7

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3
Q

Ball-and-stick model

A

a representation of ionic compounds and molecules in which balls represent the atoms or ions, and springs or plastic links represent the chemical bonds

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4
Q

Brittle

A

when a substance is likely to crack or shatter when hit

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5
Q

Chemical property

A

a feature of a substance that can only be determined by studying it chemical reactions

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6
Q

Conductor

A

able to carry electrical or thermal energy

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7
Q

Covalent bond

A

a strong force of attraction between the nuclei of two atoms that are sharing one or more pairs of electrons

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8
Q

Delocalised electron

A

a free electron in a molecule, ion or solid metal that is not part of an individual atom or bond

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9
Q

Displayed formula

A

a diagram in which atoms are represented by chemical symbols, and covalent bonds by lines

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10
Q

Dot-and-cross diagram

A

model in which electron shells are shown as circles, with electrons as dots or crosses

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11
Q

Ductile

A

able to be drawn into wire without breaking

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12
Q

Electron diagram

A

a model of an atom or ion in which shells are represented as circles, and electrons by dots or crosses

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13
Q

Electronic structure

A

the arrangement of the electrons in an atom

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14
Q

Giant covalent structure

A

an arrangement of non-metal atoms joined by covalent bonds in a regular
arrangement

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15
Q

Giant ionic lattice

A

a structure of ionic compounds in which oppositely charged ions are held in a regular and repeating arrangement by strong electrostatic forces of attractions

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16
Q

Giant metallic lattic

A

the repeating regular arrangement of metal atoms or ions in a metal in the solid state

17
Q

Group

A

in the periodic table, a column of elements with similar chemical properties and the same number of
electrons in the outer shells of their atoms

18
Q

Insulator

A

unable to carry electrical or thermal energy

19
Q

Intermolecular forces

A

weak forces of attraction that exist between simple molecules

20
Q

Ion

A

charged particle formed when an atom, or a group of atoms, loses or gains electrons

21
Q

Ionic compound

A

a compound containing oppositely charged ions from different elements

22
Q

Malleable

A

able to be bent, hammered, or pressed into shape without cracking or shattering

23
Q

Metal

A

a substance that is usually shiny, malleable, ductile, and a good electrical or thermal conductor

24
Q

Metallic bond

A

the strong electrostatic forces of attraction between delocalised electrons and metal ions

25
Q

Monomer

A

small molecules that can join together to form polymer molecules

26
Q

Non-metal

A

a substance that is usually dull, brittle, and a poor electrical or thermal conductor

27
Q

Outer shell

A

the outermost occupied shell in an atom

28
Q

Oxide

A

a type of compound formed when an element or compound gains oxygen

29
Q

Period

A

in the periodic table, a row in which the atomic number increases by 1 going from one element to the next

30
Q

Periodic table

A

a table in which elements are arranged in rows (periods) and columns (groups), in order of increasing atomic number

31
Q

Physical property

A

feature of a substance that can be observed or measured, such as its melting point or colour

32
Q

Polymer

A

substance with molecules made from many repeat units

33
Q

Repeating unit

A

a section of a polymer molecule that is repeated many times in the molecules

34
Q

Simple molecule

A

a particle consisting of a few non-metal atoms joined together by covalent bonds

35
Q

Space-filling model

A

a representation of ionic compounds and molecules in which balls represent the atoms or ions

Chemistry GCSE Key Terms (4 decks)

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