Exothermic and endothermic reactions Flashcards
1
Q
Examples of exothermic reactions
A
- Combustion
- Neutralisation reactions
- Reaction between water and calcium oxide
2
Q
Examples of endothermic reactions
A
- Electrolysis
- Reaction between ethanoic acid and sodium carbonate
- Thermal decomposition
3
Q
What is an exothermic reaction?
A
When energy is transferred from the reaction to the surroundings (temperature of surroundings increase)
4
Q
What is an endothermic reaction?
A
When energy is transferred from the surroundings to the reaction (temperature of the surroundings decrease)
5
Q
What does a reaction profile diagram for exothermic look like?
A
- Products lower than reactants
- Less activation energy than endothermic
6
Q
What does a reaction profile diagram for endothermic look like?
A
- Products higher than reactants
- More activation energy than exothermic
7
Q
What does a catalyst do to the reaction path?
A
Decreases reaction time/distance
