topic 5 - energy changes Flashcards
1
Q
endothermic
A
energy is taken in from its surroundings during the experiment
2
Q
exothermic
A
transfers energy to its surroundings
3
Q
bond energies
A
bond breaking is endothermic
bond forming is exothermic
4
Q
fuel cells
A
a fuel cell is an electrical cell that’s supplied with a fuel and oxygen and uses energy from the reaction between them to produce electrical energy efficiently
5
Q
batteries
A
two electrodes in an electrolyte. has ti be two materials. the higher the difference in reactivity. the larger the pd, producing a current
