Outcomes

Pupils can use the equation: Q = I × t
Pupils can identify the direction of movement of charge in a wire, charge in an elecrolyte and the direction of flow of conventional current.

Specification References

2.15 understand that current is the rate of flow of charge

2.16 recall and use the relationship between charge, current and time : charge = current × time

2.17 recall that electric current in solid metallic conductors is a flow of negatively charged electrons

Demonstrate potassium permanganate in amonia on filter paper, resting on a slide in an electric field. Alternatively view the movement of ions.

Class Practical: Electrolysis

Plan and predict: which side to place the 10p. What will be observed? What will change if you keep the circuit running for longer?
Coating 10pence pieces with copper during electrolysis of CuSO4

Class act as charges in a circuit. Which way would they move if they were i) positive ii) negative? What happens in a solid and a liquid?

Movement of ions demo with potassium permanganate and amonia.

Class practical electrolysis kits and 10pence pieces, accurate mass balance