Thermodynamics (unit 1)

Question 1

what is the energy/what is it measured in?

Answer 1

the ability to do work, measured in joules

Question 2

what is temp change?

Answer 2

change in thermal energy

Question 3

what is chem change?

Answer 3

energy of rearranging matter

Question 4

what type of energy is chem change?

Answer 4

potential energy

Question 5

what type of energy is temp change?

Answer 5

kinetic energy

Question 6

what is the guiding principal of calorimetry?

Answer 6

energy cannot be created or destroyed, only transferred

Question 7

what is the y and x axis on a PED?

Answer 7

y = potential energy and x = reaction coordinate

Question 8

if a graph drops, it is a ______ enthalpy change, an _______ reaction, and a __________ in potential energy

Answer 8

negative, exothermic, decrease

Question 9

if a graph rises, it is a _______ enthalpy change, an _________ reaction, and a _________ in potential energy

Answer 9

positive, endothermic, increase

Question 10

the lines before and after the curve in a PED represent what?

Answer 10

the products and the reactants