Abeka Chemistry Flashcards for Chapter 6

The area of chemistry dealing with energy changes in chemical reactions.

Chemical reactions physical changes which absorb heat energy.

Chemical reactions which release heat energy.

The ability to do work.

Energy associated with motion.

-depends on the mass and velocity of an object.

Energy stored within a physical system as a result of the position or configuration of the system. It has the potential to be converted into other forms of energy, such as kinetic energy, and to do work in the process.

Something undergoing a change, either physical or chemical.

The force outside the system being acted upon.

The sum of all the possible forms of energy in the ions, atoms and molecules of a system. It cannot be measured but changes in it can be.

Something thats value is determined only by the state of the system.

The SI unit of energy; either heat or work.

The amount of heat that a system contains.

A device used to measure the change in the heat energy of a system.

The total amount of heat liberated or absorbed between the start of a reaction and its end, where all products return to their original temperature.

Used to find the "heat of reaction" of a system.

The normal physical state of an element at 1 atm and 298 K.

The change of the heat content of a system in which one mole of a compound is formed from its elements in their standard states.

The quantity of heat required to melt 1g. of a substance at its melting point.

The amount of heat required to vaporize 1g. of a substance at its normal boiling point.

A measure of the disorder or randomness of a system.

The entropy of the universe is always increasing.