2. Calderglen High School 12345 67891011

3. Calderglen High School 1 Electricity is a flow of …..? answer electrons

4. Calderglen High School Chemicals get used up answer 2 Why do batteries run out ?

5. Calderglen High School Give an advantage of a battery portable answer 3

6. Calderglen High School What is the purpose of the ion (salt) bridge? Completes the circuit answer 4

7. Calderglen High School Give a disadvantage of a battery. expensive answer 5

8. Calderglen High School What is the relationship between the position of metals in the electrochemical series and the voltage of a cell? The further away they are from each other the larger the voltage answer 6

9. Calderglen High School Give an example of a rechargeable battery answer 7 Lead/acid - car battery

10. Calderglen High School What is the purpose of an electrolyte? What is the purpose of an electrolyte ? To complete the circuit answer 8

11. Calderglen High School In which direction will electrons flow in a cell containing silver and magnesium connected by an electrolyte? magnesium to silver answer 9

12. Calderglen High School In which direction will the electrons flow in a zinc/copper cell? zinc to copper answer 10

13. Calderglen High School What produces the electricity in a battery? A chemical reaction answer 11