Other pages in this set

Page 2

Preview of page 2

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
Chemical Bonding
When 2 or more elements react together a compound if formed. Elements react together to
achieve stable electronic structures. When atoms of non-metallic elements join together by
sharing electrons are called covalent bonding. When metallic elements react together they
form ions in a process of ionic bonding.…read more

Page 3

Preview of page 3

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
Ionic Substances
Ionic compounds are made from both metals and non-metals
Ions are packed together in an ordered regular structure in a giant ionic lattice
Each ion is surrounded by several ions of opposite charge
Opposite electrical charges attract so each ion is surrounded by strong electronic
attraction
This electrostatic attraction between positive and negative ions is knows as ionic
bonding
Melting Points
The attraction between positive and negative ions is strong.…read more

Page 4

Preview of page 4

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
As a solid, ions are vibrating in a fixed position so they do not conduct electricity
When the ionic compound has melted, it can conduct electricity
Many ionic compounds dissolve in water. When they dissolve they are free to move
around making the water a conductor
Covalent bonding
An example of covalent bonding with hydrochloric acid
Giant Ionic Structures
Ionic compounds have giant structures in which many strong electrostatic forces holding
the ions together.…read more

Page 5

Preview of page 5

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
This means they are solid at room temperature. A lot of energy is needed to overcome
the ionic bonds to melt the solids.
Ionic compounds have high melting and boiling points.
When some compounds are melted, the ions are free to move. This allows them to carry
an electric charge.
Some ionic solids dissolve in water because water molecules can split up the lattice.
Ions are free to move in the solution so they can conduct electricity.…read more

Page 6

Preview of page 6

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.…read more

Page 7

Preview of page 7

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
Diamond
Molecular Structure
- A giant covalent structure known as a macromolecular structure
- Has no delocalised electrons
- Each carbon atom forms 4 single covalent bonds in a rigid giant covalent structure.…read more

Page 8

Preview of page 8

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.2
- Can polish and cut materials
- It can be used to make jewellery due to its transparent and beautiful aesthetic.
Intermolcular and Intramolecular Forces
- Strong intermolecular forces shown in the strong structure present
- Intramolecular force on diamond is the covalent bond
Graphite
Moleclar Structure
- Each carbon atom only forms 3 covalent bonds
- Forming 3 covalent creates layers which could slide over each other
- There is a free delocalised electron in each atom.…read more

Page 9

Preview of page 9

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.…read more

Page 10

Preview of page 10

Here's a taster:

STRUCTURE, BONDING & PROPERTIES] C2.1 and C2.…read more

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »