gases Flashcards
Gases have ___ intermolecular forces
weak
What is the formula for pressure? What is the SI unit and other units?
P=F/A
N/m^2 (or 1 Pa), atmospheres, and kPa
What is the conversion factor between atmospheres and pascals?
1 atm = 101.325 kPa
What pressure is used to keep measurements the same so they can be compared?
Standard Atmospheric Pressure (1 atmosphere)
Gases consist of molecules in ______
constant random motion
Gas particles don’t have any ____ and will move in a straight line until they _____
attraction or repulsion
collide with another particle or the side of the container
Gas is mostly ___
empty space
Collisions between particles are ____
elastic (don’t transfer energy, and no energy is lost)
The average KE of the gas depends on the ____
temperature of tha gas (and nothing else)
What is Kinetic energy?
The energy of movement
What is potential energy?
Stored energy that an object has because of its position relative to other objects.
Why does temperature directly affect the kinetic energy of a gas?
Because as the temp increase, the particles move more quickly. As the temp decreases, the particles slow down.
What is the formula for KE?
KE=(mv^2)/2
The more kinetic energy a gas has, the more ____ its particles will have
collisions
What is Boyle’s law and what does it describe
Describes the relationship between pressure and volume
P1V1 = P2V2
(the pressure of a fixed amount of gas at a constant temperature is inversely proportional to the volume of the gas)