Unit 12 Test Flashcards
what is the kinetic molecular theory
it explains the behavior of gases. it offers an explanation of some of the properties of gases
according to the kinetic molecular theory…
all matter consists of tiny particles that are in constant motions, particles in a gas are considered to be small round spheres with an insignificant volume, the motion of gas particles is rapid, constant, and random, and all collisions between gas particles are perfectly elastic
what is the equation for gas pressure
pressure = force/area
gas particles travel in what type of lines
straight lines
what is gas pressure the result of
billions of rapidly moving gas particles colliding with an object
what is atmospheric pressure
the pressure created by the earth’s gravitational pull on the gases in our atmosphere
what is a barometer
a device that is used to measure atmospheric pressure
whats the SI unit of pressure
pascal (Pa)
what is one standar atmosphere (atm)
the atmospheric pressure at sea level
what is dalton’s law of partial pressures
it states that the total pressure of a mixture of gases is the sum of the pressures of each of the individual gases
what is dalton’s law of partial pressures equation
Ptotal = P1 + P2 + P3……
what are the four big variables of a gas sample
pressure, volume, temperature, and amount
what is the unit for Pressure (P)
atm, mmHg, kPa….
what is the unit for Amount (n)
moles
what is the unit for temperature (T)
Kelvin (K)