energy changes Flashcards
1
Q
endothermic
A
takes energy in (colder)
2
Q
exothermic
A
gives energy out (hotter)
3
Q
example of endothermic reaction
A
electrolysis
4
Q
example of exothermic reaction
A
burning, neutralisations
5
Q
hydrogen fuel cell advantages
A
only water produced - no carbon emissions
6
Q
hydrogen fuel cell disadvantages
A
production uses fossil fuels
doesn’t work at low temperatures
