Electric Cells As Energy Systems

Question 1

What is an electrolyte?

Answer 1

A solution that is bake to conduct electricity

Question 2

How does a lemon battery work?

Answer 2

Through a chemical reaction

Question 3

What does an ammeter measure?

Answer 3

How fast an electric current flows

Question 4

What does a volt meter measure?

Answer 4

The amount of energy in a circuit

Question 5

What is inside a battery?

Answer 5

A paste made from different chemicals

Question 6

What is a paste?

Answer 6

A solid which behaves like a liquid i.e. Half solid half liquid

Question 7

What is the source of energy in an electric circuit?

Answer 7

A cell or battery

Question 8

What is the difference between a cell and a battery?

Answer 8

A cell is a single source of energy, whereas a battery is a group of cells working together

Question 9

What is a system?

Answer 9

A group of components that work together to perform a common function

Question 10

What does the electric cell system aim to do?

Answer 10

To generate electricity

Question 11

How does an electric cell generate energy?

Answer 11

Through chemical reactions

Question 12

What are the components of a lemon battery?

Answer 12

Lemon
Zinc
Copper
Light bulb
Insulated copper wires

Question 13

How does a lemon battery work?

Answer 13

The lemon juice works as an electrolyte
The zinc and copper act as electrodes
One is positive and one is negative that is to say, one attracts electrons and one gives up electrons
This creates a current
The electrolyte allows the current to flow

Question 14

Does the lemon battery work with only one type of metal?

Answer 14

No

Question 15

What can increase the current in a lemon battery?

Answer 15

Juicy lemons work better
Warm lemons work better
Sink the electrodes deeper in the lemon
More nails
More lemons

Question 16

Why is lemon juice an electrolyte?

Answer 16

It is an acid

It has more hydrogen ions

Question 17

What is an electric current?

Answer 17

A flow of charges

Question 18

Does a battery produce energy outside of a circuit?

Answer 18

No

Question 19

What is an ion?

Answer 19

An atom where the protons and electrons are unbalanced

Question 20

What are the components of a zinc-copper cell?

Answer 20

Beakers
Copper surface solution
Zinc sulphate solution
Sodium chloride/sulphate solution
U-tube
Cotton wool
Copper electrode
Zinc electrode 
Insulated copper wires

Question 21

How do you create a zinc-copper battery?

Answer 21

Place the solutions in separate beakers
Connect the electrodes to separate connecting wires
Place the electrodes in their corresponding solutions
Create a salt bridge with the U-tube and the sodium compound
Use the cotton wool to hold the sodium solution in
Place the salt bridge between the two beakers

Question 22

What is a half-cell?

Answer 22

Half of the components of a cell

Question 23

What is the purpose of the salt bridge?

Answer 23

To connect the two half cells

Question 24

How does a zinc-copper battery work?

Answer 24

The zinc electrode releases ions into the zinc solution
The copper solution deposits ions onto the copper electrode
The ions flow through the salt bridge

Question 25

What kind of energy transformation takes place in a zinc-copper cell?

Answer 25

Chemical energy➡️ Electrical Energy

Question 26

How do rechargeable cells work?

Answer 26

An electric current is run through it, which reverses the chemical reaction

Question 27

What are other chemicals which can be used in batteries?

Answer 27

Zinc-carbon
Nickel-cadmium
Nickel-Zinc

Question 28

What is an electric cell?

Answer 28

A system in which chemical reactions take place to convert chemical energy into electrical energy

Question 29

What can be used to construct a simple cell?

Answer 29

An acidic fruit

Question 30

How can a complex cell be constructed?

Answer 30

Two beakers with an electrode and an electrolyte in each. They are connected by a salt bridge