Introductory Chemistry Study Set 7

Chemistry

Quiz 10 :

Solids and Liquids

Quiz 10 :

Solids and Liquids

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H2O molecules experience hydrogen bonding.
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True False
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True

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Enthalpy of vaporization is the amount of energy needed to change from a liquid to a gas or from a gas to a liquid.
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True False
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True

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Solids can be easily compressed.
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True False
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False

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The energy change when 24 g of H2O(g) condenses to a liquid at 100°C is 40.68 kJ. (ΔHvap of H2O = 40.68 kJ/mol; molar mass of H2O = 18 g/mol)
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Hydrocarbons such as CH4 experience strong hydrogen bonding.
True False
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The formation of a gas from a liquid at temperatures below the boiling point is called evaporation.
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The process of a solid-to-gas change is called deposition.
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Melting is always an endothermic reaction.
True False
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Adhesion is the tendency of a substance to interact with itself.
True False
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The process of a liquid becoming a solid is called solidification.
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Polar molecules have a significantly higher boiling point than nonpolar molecules.
True False
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Mercury has stronger adhesive forces than cohesive forces.
True False
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ΔH will be negative for a solidification reaction.
True False
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The vapor pressure for a substance is inversely proportional to the temperature.
True False
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Dipole-dipole interactions are generally weaker than dispersion forces.
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A substance stays at the same temperature during melting.
True False
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Vapor pressures of solids are typically much higher than that of liquids.
True False
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Surface tension is an effect caused by an imbalance of forces on the atoms at the surface of a liquid.
True False
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The partial pressure of the vapor at equilibrium is called the vapor pressure of the liquid.
True False
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The strongest intermolecular forces present in a H2S molecule are dispersion forces.
True False
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