Summer work 8th August.

• Chemistry
• Upper Secondary (Key Stage 4)
• GCSE

Summer work 8th August.

Which is a rod of metal or graphite through which an electric current flows into or out of an electrolyte?

1. Electrolyte
2. Electrode
3. Electrolysis
4. Electrons

Why do covalent compounds not undergo electrolysis?

1. Cannot conduct electricity
2. Can conduct electricity

Which is the positive electrode?

1. Anode
2. Cathode
3. Anion
4. Cation

Which is the negative ion in electrolysis called?

1. Anode
2. Cathode
3. Anion
4. Cation

What are electrolytes?

1. Covalent liquids which cannot conduct electricity.
2. Ionic solids which are not molten or aqueous.
3. Covalent gases which cannot conduct electricity.
4. Ionic liquids and solutions that are able to conduct electricity.

Describe what happens at the negative cathode?

Describe what happens to negative anions at the positive anode

Describe what happens to positive cations at the negative cathode.

Describe what the term electrolyte solution means.

Why can solid ionic compounds not conduct electricity?

Describe in detail the difference between solid and molten ionic compounds.

Describe the movement of ions in electrolysis.

During electrolysis _______ compounds in the ______ are split. ____________ charged ions move to the cathode. ____________ charged ions move to the anode. 

At the anode ions ____________ electrons and become atoms. At the _______________  ____________ ions ____________electrons and become atoms.

Ionic

Electrolyte

Negatively

Positively

Lose

Cathode

Gain

Positive