Batteries are a store of chemical energy which can be converted into _________ energy?
electrical
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...?
electrolyte
Give an example of an electrolyte
Ammonium chloride
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?
voltage
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?
lose
During a displacement reaction the atoms of the metal lower in the electrochemical series _____ electrons forming atoms of the metal?
gain
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 ______?
oxidation
A compound reacting to form a metal element is an example of ______?
reduction
Oxidation and reduction reactions together are called a....?
Redox reaction
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
Author
Anonymous
ID
76726
Card Set
Topic 10 - Making Electricity
Description
Standard Grade Chemistry - Topic 10 - Making Electricity