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KMT & Solids Review. _________ is the energy of motion. Kinetic Energy. List one standard pressure. 760 torr 760 mm Hg 101.3 Kpa 1 atm. Convert the following: 293 K = _____C. 20 C. List one temperature that all molecular motion would stop at. O K -273 C.
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_________ is the energy of motion • Kinetic Energy
List one standard pressure. 760 torr 760 mm Hg 101.3 Kpa 1 atm
List one temperature that all molecular motion would stop at O K -273 C
Which phase of matter has the FASTEST (not violent)average kinetic energy? • GASES
According the KMT, “collisions between particles are perfectly elastic”. What does that mean? • There is NO energy loss!
If the temperature of water was decreased, what happens to the kinetic energy? • Kinetic energy DECREASES
What type of solid is glass considered? • Amorphous solid
Describe the particle motion of solids • Particles vibrate around fixed points
What is the difference between a unit cell and crystal lattice? • Unit cells make up the crystal lattice
What are the two types of solids? • Crystalline • Amorphous
Where can you find plasma? • Neon or fluorescent lights • Sun/stars
What happens at absolute zero? • All molecular motion stops
__________ is when unit cells do not line up • Dislocation
Which phase of matter has the SLOWEST average kinetic energy? • Solids
List the 3 assumptions to the KMT • All matter is made of particles • All particles are in constant motion • Collisions between particles are perfectly elastic
____________would contain atoms made up of free electrons and ions of the element. • Plasma
Describe the particle motion of liquids • Particles vibrate around moving points
According to the KMT, describe the volume of solids. BE SPECIFIC! • Definite volume = particles are packed VERY close together
__________ is a process that deliberately makes crystals impure • Doping
List one standard temperature. 273 K 0C
What is one example of a liquid crystal? • Mood rings • Insect wings • LCD screens
________ are crystals that have water incorporated into the crystalline structure. • Hydrated crystals
_______ are impurities that are present in crystals • Inclusion
According to the KMT, describe the shape of solids. BE SPECIFIC! • Definite shape = particles vibrate around a fixed position
Describe a solid in terms of particle spacing and movement. Be specific! • Particles are very close together • Particles vibrate around fixed points
________is two substances with the same structure & shape • Isomorphism
Which phase of matter has the most violent average kinetic energy? • Plasma
_______ is having different properties in different dimensions • Anisotropy
_______ is a substance with more than one crystalline shape • Polymorphism
_________ is a dehydrated crystal that absorbs some water from the air • Hygroscopic crystal
What abbreviation is used to show standard temperature and pressure at sea level? • STP
How do amorphous solids differ from crystalline solids? Provide one difference • Crystalline = defined melting points; uniform pattern • Amorphous = NO defined melting points; NO uniform pattern
_________ are crystals without shape, no crystal form • Amorphous crystals
Describe the particle motion of gases • Particles are moving in completely random motions
________forms a solution by absorbing water from the air (ex: NaOH pellets) • Deliquescent crystals
What is one factor that would affect crystal formation? • Temperature • Pressure
________ is changing from a solid state to a gaseous state • Sublimation
_______ is a drying agent used to absorb moisture • Desiccant
What is an advantage of doping a crystal? • Increases electrical conductivity
________ is a crystal that had water removed from it • Anhydrous cyrstal