8 terms

AQA GCSE Chemistry C2.5 Energy and Reactions

STUDY
PLAY
exothermic
When energy is given out to the surroundings by a chemical reaction
endothermic
When energy is taken into chemical bonds from the surroundings.
chemical reaction
This involves the breaking and or forming of chemical bonds.
reversible reaction
Reactions that do not go to completion and occur in both the forward and reverse directions.
activation energy
The energy barrier that must be overcome during a collision of two potential reactants in order for a reaction to occur.
catalyst
A catalyst speeds up a reaction by providing an alternative reaction pathway that has a lower activation energy.
thermal decomposition
This is the breaking of a molecule to form two or more products using thermal energy. This makes it an endothermic process.
combustion
The exothermic oxidation of a fuel.
YOU MIGHT ALSO LIKE...