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States of Matter (Definitions (Kinetic energy~ the energy an object has…
States of Matter
Definitions
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Kinetic theory~ a theory explaining the states of matter, based on the concept that all matter consist of tiny particles that are in constant motion.
Atmospheric pressure~ the pressure exerted by atoms and molecules in the atmosphere surrounding earth, resulting from collision of these particles with objects.
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Stranded Atmosphere (atm)~ a unit pressure; it is the pressure required to support 760 mm of mercury in a mercury barometer at 25 degrees Celsius.
Definitions
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Boiling point~ is the temperature at which the vapor pressure of a liquid is equal to the external pressure.
Normal boiling point~ is the temperature at which the vapor pressure of a liquid is equal to 1 atmosphere.
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Definitions
Unit cell~l is the smallest group of particles within a crystal that retains the shape of the crystal.
Crystal~l is a solid in which particles are arranged in an orderly, repeating pattern.
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Allotropes~ which are two or more different molecular forms of an element in the same physical state.
Which of the following statements is NOT true, according to the kinetic theory?
Only particles of matter in the gaseous state are in constant motion.
What is absolute zero? Lowest possible temperature, all particle motion would stay.
What happened to the average kinetic energy of the particles in a sample of matter as the temperature of the sample increased? Increses
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Can energy be added without changing temperature? Explain? Yes during phase change, energy goes to break bonds.
Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a gas
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According to the kinetic theory, collisions between molecules in a gas are perfectly elastic
As a sample of matter is heated, its particles move more quickly.
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