Latent heat of fusion and vaporization
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16 questions
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- Q1What is the latent heat of fusion?The amount of heat required to change a substance from solid to liquid without any change in temperature.The amount of heat required to change a substance from solid to gas without any change in temperature.The amount of heat required to change a substance from liquid to gas without any change in temperature.The amount of heat required to change a substance from gas to liquid without any change in temperature.30s
- Q2What is the latent heat of vaporization?The amount of heat required to change a substance from solid to liquid without any change in temperature.The amount of heat required to change a substance from gas to liquid without any change in temperature.The amount of heat required to change a substance from solid to gas without any change in temperature.The amount of heat required to change a substance from liquid to gas without any change in temperature.30s
- Q3What happens to the temperature during a phase change?The temperature increases during a phase change.The temperature fluctuates during a phase change.The temperature remains constant during a phase change.The temperature decreases during a phase change.30s
- Q4What is the definition of specific heat?The amount of energy required to evaporate a substance.The amount of energy required to melt a substance.The amount of energy required to freeze a substance.The amount of heat energy required to raise the temperature of a certain amount of substance by one degree Celsius.30s
- Q5Which of the following substances has the highest specific heat?IronCopperWaterAluminum30s
- Q6What is the formula for calculating specific heat?Q = mcΔHQ = mlvP = mghQ = mcΔT30s
- Q7Which unit is typically used to measure specific heat?m/skg/LA/m²J/g°C30s
- Q8Which factor does not affect the specific heat of a substance?PressureTemperatureType of substanceMass30s
- Q9Which statement best describes the specific heat of metals?Metals generally have low specific heat.Metals always have a specific heat of 1.0 J/g°C.Metals have the same specific heat as liquids.Metals generally have high specific heat.30s
- Q10Which statement about specific heat is true?Specific heat is directly proportional to the mass of a substance.Specific heat remains constant for all substances.Specific heat is measured in degrees Celsius.Different substances have different specific heat values.30s
- Q11Which of the following substances has the highest heat of fusion?WaterAluminumCopperIron30s
- Q12What is the heat of fusion of ice?500 joules per gram200 joules per gram1000 joules per gram334 joules per gram30s
- Q13What is the heat of fusion of lead?12.8 kilojoules per mole37.2 kilojoules per mole56.9 kilojoules per mole24.5 kilojoules per mole30s
- Q14Which substance has the highest heat of vaporization?WaterMethaneAlcoholCarbon dioxide30s
- Q15Which phase change requires the most heat energy?FreezingVaporizationMeltingCondensation30s