Flashcards in H.Chemistry final Deck (123)
Energy of motion
Explains the behavior of particles in terms of their motions
4 properties of gases:
2-move in rapid, constant straight-line motion
4-far apart with no attractive or repulsive force
Collision in which no kinetic energy is lost.
Measure of average kinetic energy
The _____________ the temperature, the _____ moving particles.
Temperature at which the motion of the particles theoretically ceases.
Simultaneous collisions of billions of molecules within an object
Force is created by _____.
Empty space, no collisions
Air molecule collisions
Typical sea level pressure
Forces within a compound that hold it together
Forces between compounds that hold these compounds together.
Which two phases are fluid?
Liquids and gases
Why are liquids more dense than gases?
Because they have attractive forces
Temperature that a solid turns into a liquid
The stronger the intermolecular force the _______ the melting point
Temperature at which a solid melts at 1.00 ATM atmosphere(101.3kPa) of pressure.
Normal melting point
Process of a liquid changing to a gas or vapor
Liquid to gas below boiling point
Happens only on the surface
How many particles escape during evaporation to become a gas
Only particles moving fast enough
As high speed particles escape this lowers the average kinetic energy and therefore the temperature.
Increasing temperature will _______ vapor pressure
The temperature at which the vapor pressure of a liquid is equal to the external pressure on a liquid.
Temperature when the vapor pressure equals the atmospheric pressure 1 atm=101.3kPa.
Normal boiling point.
Temperature of liquid _____ gets above the boiling point