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Flashcards in Bonding Deck (39):
0

Ionic bonding is between what

Metal + non metal

1

Metal + non metal

Ionic bonding

2

Covalent bonding is between what

Non metals

3

Non metals and non metals. What bonding

Covalent bonding

4

Metallic bonding is between what

Metals

5

Metals and metals. What bonding

Metallic

6

Structure of ionic bonding

Giant 3D lattice

7

Covalent structure (simple molecular)

Separate molecules. Between them are intermolecular forces.
NOT BONDS

8

Covalent structure (macromolecular)

Giant lattice

9

Metallic structure

Lattice of positive ions surrounded by a sea of delocalised electrons

10

Ionic bonding

Attraction between oppositely charged ions

11

Covalent bonding (simple)

Strong covalent bonds

12

Covalent bonding (macro)

Lots of atoms held by strong covalent bonds

13

Metallic bonding

Lots of electrostatic attraction by sea of delocalised electrons

14

Ionic state at room temp

Solid

15

Covalent (simple) state at room temp

Gas / liquids

16

Covalent (macro) state at room temp

Solid

17

Metallic state at room temp

Solid

18

Mp of ionic

High

19

Ionic mp why?

Lots of energy needed to overcome strong ionic bonds

20

Covalent (simple) mp

Low

21

Why covalent mp (simple)

Weak intermolecular forces between molecules easy to overcome.
NOT BONDS

22

Covalent (macro) mp

High

23

Why covalent (macro) mp

Strong covalent bonds need to break

24

Metallic mp

High

25

Metallic mp why

Strong electrostatic attraction between positive metal ions and electrons

26

Ionic bonding conductivity

No as solid
Yes if molten or solution

27

What makes a bonding able to conduct electricity

Charged particles able to MOVE AND CARRY THE CURRENT

28

Covalent (simple) conductivity

No

29

Covalent (macro) conductivity

No
Apart from graphite along the layers

30

Metallic conductivity

Yes

31

Ionic diagram

3D shape with opposites

32

Covalent (simple) diagram

Cl - Cl
- -
- -
- -
Cl - Cl

33

Metallic diagram

e e e
+++++++ e
+++++++ e
e e e

34

Trend in mp of ionic

As ion increases attraction is stronger therefore mp is higher

35

Why is diamond strong

Lots of strong covalent bonds

36

Why is graphite a good lubricant

Layers slide over each other as weak forces between layers

37

What are metals malleable

Layers can slide over each other

38

How are covalent bonds held together

Each of the positively charged nuclei are attracted to the negatively charged electrons