Exothermic and Endothermic reactiond Flashcards
1
Q
What is an Exothermic reaction?
A
- Transfers energy from reacting molecules to the surroundings.
- ## Temperature of surroundings increases.
2
Q
What does an exothermic energy profile diagram look like?
A
- Products have less energy than reactants.
- ## Energy has been transferred from the reaction to the surroundings.
3
Q
What does the difference in the energy of reactants compared to energy of products tell us?
A
- Energy that has been released into the surroundings.
4
Q
What are 2 uses for exothermic reactions?
A
- Hand warmers.
- Self Heating cans.
5
Q
What are endothermic reactions?
A
- Takes energy from the surroundings.
- ## The temperature of the surroundings decreases.
6
Q
What is an example of an endothermic reaction?
A
- Thermal decomposition.
7
Q
What does the energy profile for endothermic reactions look like? (step up).
A
- Reactants have more energy than products.
- ## Energy has been taken from the surroundings.
8
Q
What does the difference in energy between the reactants and products show us?
A
- Amount of energy that has been taken in by the reaction,
9
Q
What is the common feature between endothermic and exothermic energy profiles?
A
- energy rises to a peak.
- Acitivation energy;
- ## Minimum amount of energy that particles must have to react.
