thermochemistry

• in calories
• A calorie is the quantity of heat needed to raise the temperature of 1 gram of pure water 1^oc.
• Dietary calorie=energy in food.
• Usually measured in kilocalories=1C=1000 calories.

will always flow from a warm object to a cool object until both objects are the same temperature.

represents thermal energy or heat.

is a from of energy

=conservation of energy. states that in any chemical rxn or physical process, energy can be converted from one from to another, but it is neither created nor destroyed.

of its composition, type of atoms in the substance, number and type of bonds joining the atoms, and the way that the atoms are arranged.

Is directly related to the constant motion of its atoms or particles and is proportional to the substance's temperature.

is the ability to do work or produce motion

the study of changes in heat that accompany chemical reations and phase changes.

is the system and the surroundings

Are everything in the universe other than the system.

A system is the specific part of the universe that contains the reaction or process you wish to study.