Topic 10 - Making Electricity
Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
Batteries are a store of chemical energy which can be converted into _________ energy?
What takes place when a battery supplies electricity?
A chemical reaction
What is electricity?
A flow of electrons along a metal wire
What kind of batteries are rechargable?
lead/acid and nickel/cadmium
The conducting substance which connects and completes the ciruit is called the...?
Give an example of an electrolyte
Why must an electrolyte be in solution or in a paste?
As the ions are only free when to move in solution and not when solid
In a cell different pairs of metals give different _________ readings?
What kind of reaction takes place when atoms of a metal higher in the electrochemical series are added to a solution of ions of a metal lower in the electrochemical series?
A displacement reaction
During a displacement reaction the atoms of the metal higher in the electrochemical series ____ electrons forming postive ions in solution?
During a displacement reaction the atoms of the metal lower in the electrochemical series _____ electrons forming atoms of the metal?
Why is an ion bridge needed in a cell?
To complete the circuit and allow ions to flow between the two halves of the cell
An oxidation reaction involves a ____ of electrons?
loss (OIL - Oxidation Is Loss)
A reduction reaction involves a ____ of electrons?
gain (RIG - Reduction Is Gain)
A metal element reacting to form a compound is an example of ______?
A compound reacting to form a metal element is an example of ______?
Oxidation and reduction reactions together are called a....?
What are the advantages of using batteries instead of mains electricity?
- Easier to move
- Less Dangerous
What are the disadvantages of using batteries of mains electricity?
- More expensive
- Have to be replaced
What would you like to do?
Home > Flashcards > Print Preview