Structure, Bonding and The Properties of Matter

Question 1

Ionic Bonding? and properties?

Answer 1

metal + non metal
- transfer electrons
- strong electrostatic forces
- form giant ionic lattice
- can conduct electricity
- solid at room temp
- high melting and boiling points

Question 2

ionisation?

Answer 2

atoms of elements form ions by losing or gaining electrons to gain a full outer shell

Question 3

metals form…
non metals form…

Answer 3

metals form positive ions
non metals form negative ions

Question 4

when can ionic compounds conduct electricity?

Answer 4

when molten or dissolved
(ions are free to move and carry charge)

Question 5

giant covalent structure?

Answer 5

hundreds of thousands of atoms joined together by strong covalent bonds
- strong covalent bonds= a lot of energy required to overcome

Question 6

covalent bonding? and properties?

Answer 6

2 non metals react to form a covalent bond
- share electrons
- weak intermolecular forces

Question 7

small molecules? and properties?

Answer 7

a few atoms are covalently bonded
- low melting and boiling points
- weak intermolecular forces
- do not conduct electricity

Question 8

metallic bonding? and properties?

Answer 8

metals are made of regular rows of positive ions, surrounded by a sea of delocalised electrons
- strong electrostatic force of attraction
- high melting point
- can conduct electricity

Question 9

alloys?

Answer 9

mixtures containing 2 or more metals
- harder and stronger than pure metals