Regents Chemistry Unit 3: Question Preview (ID: 19372)


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Which hypothesis states that equal numbers of particles of a gas will occupy equal volume under the same conditions of temperature and pressure?
a) Mendeleev b) Avogadro c) Archimedes d) Aristotle
According to kinetic-molecular theory, what does not exist between gas molecules?
a) Intermolecular attractive forces b) Hard feelings c) Ion-ion attractions d) Cohesivity
According to kinetic-molecular theory (ideal gas behavior), what direction to gas particles move?
a) In a straight line b) In a vortex c) In a wave-like pattern d) Any way they want
Under which conditions do gasses behave most like an ideal gas?
a) Low temperature and high pressure b) High temperature and high pressure c) Low temperature and low pressure d) High temperature and low pressure
Which process is exothermic?
a) Boiling b) Condensation c) Melting d) Sublimation
What term describes the amount of heat energy needed to boil one gram of liquid at the substance’s boiling point?
a) Heat of sublimated b) Heat of fusion c) Specific heat d) Heat of vaporization
Which process is endothermic?
a) Melting b) Freezing c) Condensation d) Sublimation
What term describes the amount of heat energy needed to melt one gram of solid at the substance’s melting point?
a) Heat of evaporation b) Heat of sublimated c) Specific heat d) Heat of fusion
In a phase change diagram, what is occurring when the plotted line is slanted?
a) Kinetic energy is remaining constant b) Potential energy is decreasing c) Kinetic energy is increasing d) Potential energy is increasing
In a phase change diagram, what is occurring when the plotted line has a slope of 0?
a) Potential energy is increasing b) Kinetic energy is increasing c) Kinetic energy is decreasing constant d) Potential energy is remaining constant
When you see the phrase “average kinetic energy of a sample,” this is the same as the
a) Color b) Potential energy c) Phase of matter d) Temperature
If a sample of pure water is at phase equilibrium and the water exists in both the liquid and solid phase, what temperature Celsius must the sample be at?
a) 10 Celsius b) 32 Celsius c) 0.0 Celsius d) 100 Celsius
What process is occurring when a substance changes directly from a gas to a solid?
a) Melting b) Evaporating c) Deposition d) Sublimation
What process is occurring when a substance changes directly from a solid to a gas?
a) Sublimation b) Melting c) Evaporating d) Deposition
What phase of matter are atoms locked into a regular geometric pattern called a crystal lattice?
a) Liquid b) Gas c) Plasma d) Solid
What phase of matter has a definite volume but indefinite shape
a) Liquid b) Solid c) Gas d) Plasma
Substances with strong intermoleculer attractive forces tend to exist in what phase at room temperature?
a) Liquid b) Solid c) Gas d) Plasma
What term is used to describe the forces of attraction that exist between molecules?
a) Intracellular forces b) Atomic forces c) Intermolecular attractive forces d) Solid-solid ion attraction
When solving gas law problems, what units must the temperature be expressed in? Kelvin
a) Celsius b) Centigrade c) Kelvin d) Fahrenheit
In gas law problems, what do the P, V and T stand for?
a) Pounds, Vapor, Toluene b) Pressure, Volume, and Temperature c) Percent, Volume, Time d) Prunes, Vegetables, and Tacos
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