Enthalpy (Chem 177)

What is the equation for change in energy?

• ΔE = E final + E initial

• ΔE = E initial - E final

• ΔE = E final - E initial

• ΔE = E final - w

What is the equation for the energy of a system?

• ΔE system = q - w

• ΔE system = q + w

• ΔE system = -q + -w

• ΔE system = E final - E initial

What is the energy of a system equal to?

• the opposite of the energy of the surroundings

• the energy of the surroundings

• the work done only

• the heat released only

What type of process makes the surroundings hotter?

• endothermic

• endoergic

• exothermic

• exoergic

What type of process makes the surroundings colder?

• endothermic

• exothermic

• endoergic

• exoergic

What process happens when work is done ON the system by surroundings?

• endothermic

• exothermic

• endoergic

• exoergic

What process happens when work is done BY the system on surroundings?

• endothermic

• exothermic

• endoergic

• exoergic

What type of energy is due to an object's relationship to another object?

• potential energy

• kinetic energy

What type of energy is due to motion?

• kinetic energy

• potential energy

When is q negative?

• when heat is gained

• when energy is absorbed

• when heat is lost

• when the surroundings become colder