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Pearson Chemistry Chapter 13 - States of Matter
Terms in this set (22)
the energy an object has due to its motion
All matter consists of tiny particles that are in constant motion.
results from the force exerted by a gas per unit surface area of an object
An empty space with no particles and no pressure
The collisions of atoms and molecules in air with objects causes _____.
A device that is used to measure atmospheric pressure
The SI unit for pressure
1 standard atmosphere (1 atm)
the pressure required to support 760mm of mercury in a barometer at 25 degrees Celcius
1 ATM equals how many mmHg?
1 ATM equals how many kPa?
1 ATM equals how many pounds per square inch?
The conversion of a liquid to a gas or a vapor.
conversion from a liquid to a gas on the surface of a liquid that is not boiling
a measure of force exerted by a gas above a liquid
Boiling Point (bp)
the temperature at which the vapor pressure of the liquid is just equal to the external pressure of the liquid
Normal Boiling Point
boiling point of a liquid at a pressure of 101.3 KPa
Melting Point (mp)
the temperature at which solid changes into a liquid
Freezing Point (fp)
the temperature at which a liquid changes into a solid
In a _____, the particals are arranged in an orderly, repeating and three-dimensional pattern called a crystal lattice.
the smallest group of particles within a crystal that retains the geometric shape of the crystal
two or more different molecular forms of the same element in the same physical state
lacks an ordered internal structure
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