Energetics

Question 1

What is an exothermic reaction?

Answer 1

Increase in temperature as it releases heat

Question 2

What is an endothermic reaction?

Answer 2

Decrease in temperature as int takes in heat

Question 3

What is the equation for energy change?

Answer 3

Q = mc∆t (Q = energy change, m = mass, c = specific heat capacity, ∆t = temp change)

Question 4

What does a energy level diagram look like for an exothermic reaction?

Answer 4

Reactants start high on energy, products finish low

Question 5

What does a energy level diagram look like for an endothermic reaction?

Answer 5

Reactants start low on energy, Products finish high on energy

Question 6

What type of process is bond breaking?

Answer 6

Endothermic because it takes in energy

Question 7

What type of process is bond making?

Answer 7

Exothermic because it energy is released when bonds form

Question 8

What is the equation for enthalpy change?

Answer 8

Energy taken in - energy given out