exothermic and endothermic reactions. Flashcards
1
Q
what are exothermic reactions accompanied by?
A
temperature rise.
2
Q
where do exothermic reactions transfer heat to and from?
A
chemicals to surroundings.
give out heat.
3
Q
examples of where exothermic reactions have been used?
A
self-heating cans, hand warmers.
4
Q
what are endothermic reactions accompanied by?
A
fall in temperature.
5
Q
where do endothermic reactions transfer heat to and from?
A
from surroundings to chemicals.
take in heat.
6
Q
examples of where endothermic reactions have been used?
A
some sports injury packs.
7
Q
in an exothermic reaction are the reactants or products higher and what happens to the energy?
A
reactants rate higher.
released.
8
Q
in an endothermic reaction are the reactants or products higher and what happens to the energy?
A
products.
absorbed.
