Chapter 7 Review

A chemical reaction that releases heat to its surroundings.

• exothermic

• endothermic

• collision theory

• closed system

A chemical reaction that absorbs heat from the environment.

• exothermic

• endothermic

• 1st law of thermodynamics

• potentail energy

The law stating that the total energy of the universe is constant.

• 1st Law of Thermodynamics

• 2nd Law of Thermodynamics

• Collision Theory

• Entropy

A law stating that for any spontaneous process, the entropy of the universe increases.

• 1st Law of Thermodynamics

• 2nd Law of Thermodynamics

• Collision Theory

• Enthalpy

A unit of energy defined as the amount of energy required to raise 1 g of water 1 °C; equal to 4.184 J.

• joule

• kilojoule

• calorie

The SI unit for energy.

• calorie

• joule

The energy associated with the position or composition of an object.

• chemical energy

• potential energy

• kinetic energy

• thermal energy

The energy associated with motion of an object.

• thermal energy

• chemical energy

• kinetic energy

• potential energy

The energy associated with the relative positions of electrons and nuclei in atoms and molecules.

• potential energy

• thermal energy

• kinetic energy

• chemical energy

A type of kinetic energy associated with the temperature of an object, arising from the motion of individual atoms or molecules in the object.

• thermal energy

• chemical energy

• potential energy

• kinetic reneger