Electrolysis

Question 1

What is electrolysis

Answer 1

Process in which ionic substances are broken down into simpler substances when an electric current is passed through them.

Question 2

What is an ionic substance

Answer 2

Form when a metal reacts with a non-metal, they contain charged particles (ions)

Question 3

How do ionic substances conduct electricity when molten/dissolved in solution

Answer 3

Ions free to move carry electrical charge

Question 4

What is the anode

Answer 4

positive electrode

Question 5

What is the cathode

Answer 5

negative electrode

Question 6

What happens at the anode

Answer 6

Negatively charged ions move to the positive electrode (anode) they lose electrons and are oxidised

Question 7

What happens at the cathode

Answer 7

Positively charged ions move to the negative electrode, They gain electrons and are reduced

Question 8

What is produced if the metal is less reactive than hydrogen

Answer 8

the metal is produced

Question 9

What is produced if the metal is more reactive than hydrogen

Answer 9

hydrogen is produced

Question 10

Uses for chlorine in industry

Answer 10

• killing bacteria in pools and drinking water
• bleach and disinfectants
• hydrochloric acid

Question 11

Uses for sodium hydroxide in industry

Answer 11

• soap