enthalpy change

Question 1

exothermic reaction?

Answer 1

temp of surroundings increase
energy given out
reactants have more energy than products
enthalpy change NEGATIVE

Question 2

endothermic reaction?

Answer 2

temp of surroundings decrease
energy taken in by reaction
reactants have less energy than products
enthalpy change is POSITIVE

Question 3

Q= ?

Answer 3

m x c x change in T

Question 4

enthalpy change = ?

Answer 4

-Q/moles

Question 5

what does breaking bonds require

Answer 5

energy (endothermic)

Question 6

what does making bonds release

Answer 6

energy (exothermic)

Question 7

enthalpy change =?

Answer 7

break - make