Chemistry 112 final

Question 1

enthalpy

Answer 1

the amount of heat transferred to a system during constant pressure and expansion work

Question 2

endothermic

Answer 2

heat added to the system

Question 3

exothermic

Answer 3

heat removed from the system (heat goes to the surroundings)

Question 4

approximations of the ideal gas law

Answer 4

intermolecular interactions between gas particles are negligible and volume of gas particles are negligible

Question 5

When does the ideal gas law break down?

Answer 5

at low temperature when intermolecular forces become more important and high pressure when the volume of the gas particles become more important

Question 6

lattice enthalpy

Answer 6

the energy difference between the ions in a gas and in solid, and is due to the electrostatic interactions between ions

Question 7

polar covalent bonds

Answer 7

electrons are unequally shared

Question 8

non-polar covalent bonds

Answer 8

electrons are equally shared

Question 9

ionic bonds

Answer 9

electrons are transferred