Question

When an ice cube melts in your hand, it changes from a solid to a liquid.

H2O (s) → H2O (l)

This is an example of ________________ reaction, because heat is _____________ the system.

a
endothermic; leaving
b
endothermic; entering
c
exothermic; entering
d
exothermic; leaving

Answer 1

b) endothermic; entering