Cells

Question 1

What is a cell?

Answer 1

Something that converts chemical energy into electrical energy, mostly has two electrodes and an electrolyte.

Question 2

What is a battery?

Answer 2

Multiple cells,

Question 3

What is an electrolyte?

Answer 3

A substance that contains ions and is able to conduct and electric current.

Question 4

Describe how two metals can create a voltage:

Answer 4

Two metals of different reactivities can create a new current when you connect them with wires as the more reactive metal will give electrons (making it the anode) to the less reactive metal (the cathode).

Question 5

Give different types of cells and their descriptions:

Answer 5

-Rechargeable cells: when they recharge they reverse the chemical reactions to reproduce the chemicals used up.

-Normal cells: goes flat when the reactants are used up.

-Fuel cells: can continue to supply a voltage as long as the chemical reactants are replenished.

Question 6

Discuss the use of normal cells:

Answer 6

Advantages:
-cheap

Disadvantages:
-wasteful
-toxic chemicals when disposed of

Question 7

Discuss the use of rechargeable cells:

Answer 7

Advantages:
-reusable
-easy to use
-little waste

Disadvantages:
-more expensive
-takes time to recharge

Question 8

Discuss the use of fuel cells:

Answer 8

Advantages:
-waste product is water (not harmful to environment)
-continuous supply of energy if replenished

Disadvantages:
-needs a constant supply of fuel to function
-transport of fuel is a problem, and ts accessibility
-expensive.