Chem Chapter 10 Energy Vocab

Energy

Ability to do work or produce heat.

Law of Conservation of Energy

Energy can be converted from one form to another but cannot created nor destroyed. (Total energy content of the universe is constant.

Potential Energy

Energy due to position or composition.

Kinetic Energy

Energy due to motion of the object (in general)

Heat

A flow of energy between two objects due to a temperature difference.

Temperature

Measure of the motion of particles in a substance. Average speed of particles.

System

Part of the universe on which we wish to focus attention.

Surroundings

Include anything in contact with the system; everything else in the universe.

Endothermic Process

Heat energy flows into a system, from the surroundings.

Exothermic Process

Heat energy flows out of a system, into the surroundings.

Thermodynamics

The study of energy

Calorie

The amount of energy required to raise the temperature of one gram of water 1 degree Celsius

Specific Heat Capacity

The energy required to change one gram of a substance by one degree Celsius

Heat Energy Formula

q=smΔT

Change in internal energy (enthalpy)

ΔH

Entropy

Function that keeps track of the tendency for the components of the universe to become disordered.