Energy & Thermodynamics

heat is a(n)...

• form of energy

• object

• process of thermal energy

• reaction

Thermal energy is measured in...

• Joules

• Pascals

• Amperes

• Celsius

Heat always moves from ___ to ___ objects.

• hot to cold

• cold to hot

• low to high

• soft to hard

-ΔE_system =

• ΔE_total

• -ΔE_surroundings

• ΔE_surroundings

• none of these are correct

ΔE_system indicates which type of reaction?

• endothermic

• exothermic

• neutralization

• synthesis

-ΔE_system indicates which type of reaction?

• combustion

• endothermic

• exothermic

• neutralization

Which law of thermodynamics does the zero-sum situation apply to?

• 1st

• 2nd

• 3rd

• none of these are correct

In an exothermic reaction, the temperature of the surroundings will...

• increase

• decrease

• stay the same

• none of these

In an endothermic reaction, the temperature of the surroundings will...

• increase

• decrease

• stay the same

• none of these

We always describe energy flow in terms of the...

• system

• surroundings