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29 Cards in this Set
- Front
- Back
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What is the Kinetic Theory?
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All matter consists of tiny particles that are in constant motion
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What is kinetic energy?
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The energy that an object has
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What are intermolecular forces?
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the forces that hold particles together
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What is an elastic collision?
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kinetic energy is transferred without loss from one particle to another
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What is atmospheric pressure?
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results from the collision of particles in the air
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What is gas pressure?
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results from the collision of millions of gas particles
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What is a barometer?
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An instrument that measures the atmospheric pressure
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What is a manometer?
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An instrument that measures vapor pressure
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What is a vacuum?
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An empty space with no particles and no pressure
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What is Kelvin Temperature?
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is the temperature of a substance that is directly proportional to the average kinetic energy of the particles of the substance.
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What is evaporation?
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when a liquid is converted to a gas or a vapor and the surface of the liquid is not bioling then evaporation will occur.
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What is vaporation?
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Vaporation is the conversion of a liquid to a gas or a vapor.
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Whar is condesation?
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condensation of vapor
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What is vapor pressure?
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Vapor pressure is a measure of the force exerted by a gas above a liquid
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What happens at dynamic equilibrium?
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the rate of evaporation of liquid equals the rate of condensation of vapor
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What is a boiling point?
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the temperature at which the vapor pressure equals the external pressure
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What is the normal boiling point?
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boiling point of a liquid at a pressure of 101.3kPa
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What is a melting point?
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the temperature when a solid trns into a liquid
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What temperature are the freezing and melting points at?
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they are at the same temperature
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What is a crystal?
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in a crystal the particles are arranged in a an orderly, repeating, three-simensional parttern called a crystal lattice
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What is a unit cell?
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they are the smallest group of particles in a cyrstal that retains the geometric shape of the crystal
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What are allotropes?
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allotropes are two or more different molecular forms of the same element in the same physical state
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What is a diamond?
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a crystalline form of carbon which has a high denisty and is very hard
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What is graphite?
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Graphite is a crystalline form of carbon which has a low density and is very soft
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What is buckministergullerence?
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another crystalline form of carbon which are rigid and have great strength
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What is an amophorus solid?
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a solid that lacks an orderly molecular structure
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What is sublimation?
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Sublimatiion is when a solid goes from a solild to a vapor without going through the liquid stage
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what is a phase diagram?
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reliationship among a solid, liquid, and vapor, of a substance in a concealed container
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What is the triple point?
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describezs the only set of conditions at which all three phases can exist in equilibrium.
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