Chemistry LGS 3/4/25 Flashcards
1
Q
Exothermic
A
A reaction that gives OUT energy to surroundings
2
Q
Endothermic
A
A reaction that takes IN energy from it’s surroundings
3
Q
Fuel
A
A substance that releases energy when burnt
4
Q
Non renewable energy
A
energy that comes from a source that will run out in a lifetime
5
Q
Renewable Energy
A
energy that comes from a source that can naturally replenish
6
Q
Sustainable energy
A
energy that comes from a source that doesn’t get depleted
7
Q
Fossil Fuels
A
Non renewable resources; coal/gas/oil burnt to give off energy
8
Q
Biofuels
A
Renewable fuels; ethanol/biodiesel burnt off to give off energy
9
Q
Displacement reactions
A
When a more reactive metal takes place of a less reactive metal - exothermic and gives off energy
10
Q
Electrochemical cell
A
A device that generates energy from chemical reactions
