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CHEM 5

TermDefinition
Liquefaction Changing from solid to a liquid at or above melting point
Crystalline solid a solid substance whose particles are arranged in orderly, geometric, repeating patterns
Viscosity the ability of a liquid to resist flowing
Temperature is determined by the average kinetic energy of the particles within a substance
Fluidity the ability of a substance to flow
Triple point The temperature and pressure at which a substance can exist in equilibrium between its solid, liquid, and gaseous states
Surface tension the strong force of cohesion at the surface of a liquid
Allotropic the term used for an element that can exhibit more than one structural form in the same state-solid, liquid, or gas
e
Molar enthalpy of fusion The amount of heat energy required to change one mole of a solid at its melting point to a liquid.
Molar enthalpy of vaporization The amount of heat energy required to change one mole of a liquid at its boiling point to a gas.
Vaporization The process of changing the physical state of a substance from a liquid to a gas. Boiling and evaporation are forms of vaporization.
Boiling vaporization above the boiling point
Evaporation vaporization below the boiling point
Sublimation The process of changing the physical state of a substance from a solid to a gas.
Deposition The process of changing the physical state of a substance from a gas to a solid.
Condensation The process of changing the physical state of a substance from a gas to a liquid.
Postulates of the Kinetic-Molecular Theory of Matter: All matter is made up of tiny particles (atoms, ions, or molecules). These particles are in constant motion, which is rapid and random. Energy is transferred between particles when they collide. The collisions are elastic with no net loss of energy. So
Amorphous Solid a substance whose particles are arranged in a random manner.
Specific heat capacity The amount of energy it takes to warm up one gram of a substance by one Kelvin
temperature to kelvin c + 273.15 = k
joules to kilojoules J / 1000 = kJ
Created by: gxlxctic.tofu
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