C2.2 Bonding Flashcards Preview

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Flashcards in C2.2 Bonding Deck (36):
1

acidic

Having a pH less than 7

2

alkaline

having a pH value greater than 7

3

ball and stick model

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

4

Brittle

When a substance is likely to crack or shatter when hit

5

Chemical property

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

6

Conductor

able to carry electrical or thermal energy

7

Covalent bond

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

8

delocalised electron

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

9

displayed formula

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

10

Dot-and-cross diagram

Model in which electron shells are shown as circles, with electrons as dots and crosses

11

Ductile

able to be drawn into wire without breaking

12

Electron diagram

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

13

Electron structure

The arrangement of the electrons in an atom

14

Giant covalent structure

An arrangement of non metal, atoms joined by covalent bonds in a regular arrangement

15

giant ionic lattice

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

16

Giant metallic lattice

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

17

Group

A column of elements with similar chemical properties and the same number of electrons in the outer shells of their atoms

18

insulator

Unable to carry electrical or thermal energy

19

Intermolecular forces

Weak forces of attraction that exist between simple molecules

20

Ion

Charged particle formed when an atom loses or gains electrons

21

Ionic bond

Strong electrostatic force of attraction between oppositely charged ions

22

Ionic compound

A compound containing oppositely charged ions from different elements

23

Malleable

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

24

Metal

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

25

Metallic bond

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

26

Monomer

Small molecules that can join together to form polymer molecules

27

Non-metal

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

28

Outer shell

The outer most occupied shell in an atom

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Oxide

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

30

Period

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

31

Periodic table

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

32

Physical property

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

33

Polymer

Substance with molecules made from many repeated units

34

Repeating unit

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

35

Simple molecule

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

36

space filling model

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