# Chapter 13 & 14

## 16 terms

if temperature and pressure are constant, gases with the same volume will then have the same number of particles

### Boyle's law

if temperature is constant, volume and pressure are inversely proportional

### Charles's law

if pressure is constant, volume and temperature are directly proportional

### combined gas law

combines Boyle's, Charles's, and Gay-Lussac's law to show the relationship between pressure, volume, and temperature for a fixed amount of gas

### Gay-Lussac's law

if volume is constant, pressure and temperature are directly proportional

### ideal gas constant

an experimentally determined constant whose value in the ideal gas equation depends on the units that are used for pressure

### ideal gas law

describes the behavior of an ideal gas in terms of temperature, volume, and pressure, and number of moles of gas present

### molar volume

the volume that gas occupies at zero degrees Celsius and 1.0 atmospheres (STP); 22.4L

### atmosphere

a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade

### barometer

an instrument that measures atmospheric pressure

### Dalton's law of partial pressure

states the total pressure of a mixture of gases is equal to the sum of the partial pressure of the component gases.

### kinetic molecular theory

the theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions

### pascal

a unit of pressure equal to one newton per square meter

### pressure

the force applied to a unit area of surface

### temperature

A measure of the average energy of motion of the particles of a substance

### kinetic energy

the energy an object has because of its motion