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- 1. Multiple ChoiceFor the formula:
Q= m c ∆T
The units for specific heat are:g /J C°C/g JkJ/gJ/g°C - 2. Multiple Choice
What would be the effect on the particles if more heat is supplied to the system?They would slow downThey would stop movingThey would speed upThere would be no effect - 3. Multiple ChoiceThermal energy ALWAYS moves from _____ to _____.solid to liquidice to waterhot to coldsolid to gas
- 4. Multiple ChoiceLT3: If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________one reaches a temperature of zerothey both have an equal temperatureone runs out of energy
- 5. Multiple ChoiceThe movement of thermal energy from an object at a higher temperature to an object at a lower temperature is called ____________.thermalexpansiontemperatureheat
- 6. Multiple ChoiceThe total energy of all the particles in a substance is called:temperaturethermal energydegreesmass
- 7. Multiple ChoiceIf the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?-80,371.244,938.680,371.2112,575.9
- 8. Multiple ChoiceWhat is the specific heat of an unknown substance if 20 kg of it at 400 °C reaches an equilibrium temperature of 351 °C when it comes in contact with a piece of aluminum. The aluminum weighs 55 kg and had an initial temperature of 4 °C? (Specific heat of aluminum is 903 J/kg °C) Use the equation mC(Tf – Ti) + mC(Tf – Ti)= 017,233,755-17,233,75517,585.46723
- 9. Multiple ChoiceFor a skillet, used for cooking, do you want a high or low specific heatHigh, so that it will need more energy to heat upLow, so that it will change temperature quickly
- 10. Multiple ChoiceSteam at temperature of 100°C is piped to 3 kg of water at the temperature of 5°C until the water reaches the boiling point. The mass of the steam required is
[Specific latent heat of vaporization of water = 2.26 × 106 J kg−1, specific heat capacity of water = 4.2 × 103 J kg−1°C−1]0.26 kg0.53 kg0.94 kg1.89 kg - 11. Multiple ChoiceHow many Joules of energy are required to change 10 gram of ice at -2 οC to water at 20 οC?440 J880 J3,840 J66,000 J
- 12. Multiple ChoiceHow many Joules of energy are required to change 10 gram of water from 20 οC to 90 οC?1400 J2800 J210,000 J1,400,000 J
- 13. Multiple ChoiceHow many Joules of energy are required to make 100 grams of ice at 0 οC completely melt?200 J400 J30,000 J2,000,000 J
- 14. Multiple ChoiceThe symbol for specific heat is .......cQmt
- 15. Multiple ChoiceWater molecules have the greatest kinetic energy in
________________Ice at 0 °C.Water at 373 K.Water at 98 °CSteam at 150 °C. - 16. Multiple ChoiceThe unit Joules is for ___________heat energytemperaturespecific heat
- 17. Multiple ChoiceDoes everything have Specific Heat?I give up!noyes
- 18. Multiple ChoiceA high specific heat means...It heats up quickly with energy addedIt requires more energy to change temperature
- 19. Multiple ChoiceThe graph shows the cooling curve of a substance.
The specific latent heat released at stages?CD and FGDE and EFEF and FGDE and FG - 20. Multiple ChoiceA metal cube at temperature of 10°C immersed in a liquid at temperature of 70°C.
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?Between 10°C and 70°CMore than 70°CLess than 10°CSame as the room temperature - Answer choicesTagsAnswer choicesTags