AQA C2 Strucutre & bonding

Ionic bonds happen between

• Metal atoms and metal atoms

• Metal atoms and non-metal atoms

• Non-metal atoms and non-metal atoms

Which property would this giant ionic compound have?

• Conducts electricity

• Low boiling point

• High melting point

• Is a gas

Why are simple covalent molecules often gases?

• The have no charge

• There are spaces between the molecules

• They only have weak intermolecular forces

• The covalent bonds are weak

Why don't simple covalent molecules conduct electricity?

• The have no charge

• There are spaces between the molecules

• They only have weak intermolecular forces

• The covalent bonds are weak

Why is diamond strong?

• It's made of carbon

• It doesn't conduct electricity

• It forms 4 strong covalent bonds

• So it can cut glass

Why do metals conduct electricity?

• It has positive ions

• It has free electrons

• There are spaces between the atoms for electricity to move through

• It forms ionic bonds

Is this a covalent bond or an ionic bond?

• Covalent bond

• Ionic bond

• Water

• Neither 

Ionic or covalent?
H  H

• Ionic

• Covalent

How are ionic bonds formed?

• When atoms share an electron

• When opposite charged atoms attract

• When one atom takes a proton

• When one atom takes a neutron

Covalent compounds

• Share electrons

• transfer electrons

• contain a sea of electrons

• conduct electricity