thermochemistry

ap chem unit 10: thermochemistry

Energy is denoted as… (letter)

E

Energy is the ability to…

do work or produce heat

Energy is the sum of all…

all potential and kinetic energy in a system

Energy is also known as the…

internal energy of the system

Potential energy is…

energy by virtue of position

Potential energy is usually the…

energy stored in bonds

When bonded atoms are separated, the PE is ______ because energy must be _____ to overcome the coulombic attraction between each nucleus and the shared electrons.

raised, added

When atoms bond, the coulombic attraction results in energy being ________ and a subsequently _____ PE.

released, lower

Kinetic energy is…

the energy of motion (translational, rotational, vibrational motion of particles in our case).

Kinetic energy depends on the ____ and the ________ of the object.

(give formula)

mass, volume

formula: KE = ½ mv²

Law of conservation of energy says that…

(which law of thermodynamics)

energy is never created nor destroyed

1st law of thermodynamics