Chemistry paper 1 revision

Ionic compounds melting and boiling points because…

• Ions are not free moving and carry a charge

• Strong electrostatic forces of attraction between oppositely charged ions

• Ions are free to move and carry a charge

• There are strong electrostatic forces that attract positive and negative ions

Ionic compounds do not conduct electricity when solid…

• Ions are not free moving and carry a charge

• Strong electrostatic forces of attraction between oppositely charged ions

• Ions are free to move and carry a charge

• There are strong electrostatic forces that attract positive and negative ions

Ionic compounds conduct electricity when liquid or aqueous…

• Ions are not free moving and carry a charge

• Strong electrostatic forces of attraction between oppositely charged ions

• Ions are free to move and carry a charge

• There are strong electrostatic forces that attract positive and negative ions

If calcium gives away 2 electrons it gains a -2 Charge

• True

• False

Answer explanation

Has a positive +2 charge

What is the definition of a alloy?

• Mixture of non metallic elements and other elements

• Mixture of covalent elements and metallic elements

• Compound of metallic elements and other elements

• Mixture of metallic elements and other elements

Pure metals are …. because layers of atoms can slide over each other

Alloys are harder because different sized atoms distort the layers. Layers are unable to …. slide over each other

Copper is a metal that contains …. electrons which move throughout the structure and carry a charge

Label the nucleus

Answer explanation

Nucleus is in the centre and is orbited by the outer subatomic particles

Label the electrons

Answer explanation

Nucleus is in the centre and is orbited by the outer subatomic particles