Chp. 10 Voc Terms & Definitions

Gay-Lussac's Law

• The law that states that the volume occupied by a gas at a constant pressure is directly proportional to the absolute temperature.

• The law that states that the pressure of a gas is directly proportional to its volume at constant temperature.

• The law that states that the volume of a gas is inversely proportional to its temperature at constant pressure.

• The law that states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Barometer

• An instrument that measures atmospheric pressure.

• A device used to measure temperature.

• A tool for measuring humidity levels.

• An instrument for detecting earthquakes.

Pressure

• The amount of force exerted per unit area of a surface.

• The total weight of an object divided by its volume.

• The force applied to an object in a direction perpendicular to its surface.

• The measure of how much mass is contained in a given volume.

Millimeters of Mercury

• A unit of pressure.

• A unit of temperature.

• A unit of length.

• A unit of volume.

Ideal Gas Constant

• R=0.082 057 84 L x atm/mol x K

• R=0.082 057 84 L x atm/mol x C

• R=0.082 057 84 L x atm/mol x J

• R=0.082 057 84 L x atm/mol x F

Combined Gas Law

• The relationship between pressure, volume, and temperature of a fixed amount of gas.

• The law stating that the volume of a gas is directly proportional to its temperature at constant pressure.

• The principle that describes the behavior of gases under varying pressure and volume conditions.

• The equation that relates the mass of a gas to its volume and temperature.

Real Gas

• A gas that behaves exactly like an ideal gas under all conditions.

• A gas that does not behave completely like a hypothetical ideal gas because of the interactions between the gas molecules.

• A gas that is always at high pressure and low temperature.

• A gas that can be liquefied at room temperature.

Pascal

• The SI unit of temperature; equal to 1/273.16 of the thermodynamic temperature of the triple point of water.

• The SI unit of pressure; equal to the force of 1 N exerted over an area of 1 m² (abbreviation, Pa).

• The SI unit of energy; equal to the work done when a force of 1 N moves an object 1 m in the direction of the force (abbreviation, J).

• The SI unit of length; equal to 1/10 of a meter (abbreviation, dm).

Volume

• A measure of the size of a body or region in three-dimensional space.

• A measure of the weight of an object.

• A measure of the surface area of an object.

• A measure of the temperature of a substance.

Temperature

• A measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object.

• A measure of the total mass of an object.

• A measure of the force exerted by the weight of an object.

• A measure of the volume of an object.