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Chemistry > C2.2 Bonding > Flashcards

C2.2 Bonding Flashcards

1
Q

acidic

A

Having a pH 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 and 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

Electron 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 attraction

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16
Q

Giant metallic lattice

A

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

17
Q

Group

A

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 loses or gains electrons

21
Q

Ionic bond

A

Strong electrostatic force of attraction between oppositely charged ions

22
Q

Ionic compound

A

A compound containing oppositely charged ions from different elements

23
Q

Malleable

A

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

24
Q

Metal

A

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

25
Q

Metallic bond

A

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

26
Q

Monomer

A

Small molecules that can join together to form polymer molecules

27
Q

Non-metal

A

A substance that is usually dull, brittle, non-ductile, a poor conductor or thermal conductor

28
Q

Outer shell

A

The outer most occupied shell in an atom

29
Q

Oxide

A

A type of compound formed when an element or compound gains an ion

30
Q

Period

A

A row in which the atomic number increases by 1 going from one element to the next

31
Q

Periodic table

A

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

32
Q

Physical property

A

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

33
Q

Polymer

A

Substance with molecules made from many repeated units

34
Q

Repeating unit

A

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

35
Q

Simple molecule

A

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

36
Q

space filling model

A

A representation of ionic compounds and molecules in which ball represent the atoms or ions

Chemistry (5 decks)

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