energy changes

Question 1

what is an exothermic reaction?

Answer 1

a reaction where energy is transferred to the surroundings, causing an increase in temperature

Question 2

what is an endothermic reaction?

Answer 2

a reaction where energy is taken in from the surroundings, causing a decrease in temperature

Question 3

what happens in an exothermic reaction?

Answer 3

energy is released as new bonds are formed

Question 4

what happens in an endothermic reaction?

Answer 4

energy is taken in to break bonds

Question 5

in reaction profiles, how can you tell if the reaction is exothermic?

Answer 5

if the products line is below the reactants line

Question 6

in reaction profiles, how can you tell that the reaction is endothermic?

Answer 6

if the products line is above the reactants line

Question 7

in notes, write out the required practical for variables affecting the temperature changes in reacting solutions