Phase Change Questions

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Thermo -chemistry Intermolecular Forces Heat Properties Phase Changes
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Phase Change Questions
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The state of matter with a definite volume and no
definite shape.
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What is a liquid?
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The phase change when a gas turns into a liquid.
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What is condensation?
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The phase change when a solid goes directly to
the gas phase without ever becoming a liquid.
300
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What is sublimation?
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A phase change that is exothermic.
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What is the freezing, deposition or condensation?
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The process by which a liquid can become a gas
without reaching the boiling point.
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What is evaporation?
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Intermolecular Force Questions
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It is the strong attraction between positive and
negative ions.
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What is an ionic bond?
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It is generally the weakest type of
intermolecular force.
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What is a dispersion force?
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Instead of an intermolecular force, a covalent
bond is considered this type of force.
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What is an intramolecular force?
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In order for a molecule to exhibit hydrogen
bonding, the hydrogen atom must be bonded to one
of these three elements
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What are oxygen, nitrogen and fluorine?
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Metallic bonds are strong intermolecular forces
because of the attraction among positive metal
ions and these
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What are delocalized electrons?
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Properties Questions
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Syrup flows much slower than water because it has
a higher _____________.
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What is viscosity?
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The average kinetic energy of a substance is a
measure of ________.
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What is temperature?
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The term used for the gas state of a liquid that
is usually a solid or liquid at room temperature
and pressure is a ________.
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What is a vapor?
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It is a method of energy transfer due to matter
being in direct contact.
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What is conduction?
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It is a solid, like butter, that has no definite
melting point.
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What is an amorphous solid?
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Heat Questions
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It is heat flow due to the motion of a fluid.
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What is convection?
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It is the temperature scale based on the kinetic
energy of particles.
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What is Kelvins?
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The flow of kinetic energy from warmer object to
a cooler object is called _______.
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What is heat?
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The method of heat transfer that does not require
matter.
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What is radiation?
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It is the energy needed to raise the temperature
of 1g of a substance by 1 degree celsius.
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What is specific heat?
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Enthalpy Questions
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It is the term for a chemical reaction that
releases heat.
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What is exothermic?
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It is the term for a chemical reaction where the
products have greater enthapy than the reactants.
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What is endothermic?
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It is the energy of a moving object or particle.
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What is kinetic energy?
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It is the term associated with a chemical
reaction where the surrounding increase in
temperature.
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What is exothermic?
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This is an energy diagram for an __________
reaction.
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What is endothermic?