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- 1. Multiple ChoiceThe symbol for specific heat is .......cQmt
- 2. Multiple ChoiceWhat is the formula to calculate heat energy required to raise the temperature of any substance?Q=mc∆tQ=mcQ= ½mvm=QC
- 3. Multiple ChoiceWhat is the symbol for Thermal Energy?QtmC
- 4. Multiple ChoiceWhat unit do you use to measure Thermal Energy?J/Kg ºCKgºCJ
- 5. Multiple ChoiceThe specific heat of aluminum is 0.21 cal/g°C. How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?105 J10.5 J1.05 J
- 6. Multiple Choice20 g of water. specific heat of water is 4.18 J/x°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?418 Joules209 J83 J4.18 J
- 7. Multiple ChoiceA material was cooled from 100ºC to 40ºC. What is the temperature change?60ºC40ºC-60ºC-40ºC
- 8. Multiple ChoiceWhat does temperature measure?HeatºCKinetic EnergyThermal Energy
- 9. Multiple ChoiceWhat is the equation to measure change in Thermal Energy?Q=mc∆tQ=mcQ= ∆mctm=QC
- 10. Multiple Choice
There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?Large cup (Trenta)Small cup (Tall)VentiAll three are the same temperature so they have same thermal energy - 11. Multiple Choice
The SI units
J/g°C
J/Kg °C
Cal/g°C
measures
Specific heatmasstemperatureheat energy - 12. 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
- 13. Multiple ChoiceThe specific heat of aluminum is 0.21 cal/g°C. How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?105 J10.5 J1.05 J
- 14. Multiple ChoiceThe specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?12.82 °C24.12°C351 °C
- 15. Multiple ChoiceWhat is Specific Heat?The amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.The amount of radiant energy required to increase the temperature of 1kgof a material by 1°CThe amount of energy required to increase the temperature of 1kgof a material by 1°C.The amount of friction required to increase the temperature of 1kgof a material by 1°C.
- 16. Multiple ChoiceUsing the heat equation, what would the formula look like if we were solving for change in temperature?Q m=∆T cQ/mc= ∆TQm/c=∆TmcQ=∆T
- 17. Multiple ChoiceThe specific heat is the amount of energy needed to raise the temperature one degree Celsius of a substance.TrueFalse
- 18. Multiple ChoiceA sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of .10 J/g°C, what is the mass of the iron sample?25g30g20g50g
- 19. Multiple ChoiceA reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction. If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius. If the reaction is our system, is the system endothermic or exothermic?ExothermicEndothermic
- 20. Multiple ChoiceWhat 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
- 21. Multiple ChoiceIn an endothermic reaction the system is releasing energy.TrueFalse
- 22. Multiple ChoiceIn an exothermic process, the surroundings are are gaining energy.TrueFalse
- 23. Multiple ChoiceCalculate the heat needed to raise the temperature of 0.25 kg of aluminum 7°C (c=900 J/kg°C)1575 J-1575 J514 J-514 J
- 24. Multiple ChoiceThe unit(s) for heat are?caloriesjoulescalories or joules
- 25. Multiple ChoiceFor an endothermic reaction, the heat is on the ____ side.reactantproducteither side
- 26. Multiple ChoiceFor an exothermic reaction, the heat is on the ____ sidereactantproducteither side
- 27. Multiple ChoiceWhat type of reaction is pictured behind?endothermicexothermic
- Answer choicesTagsAnswer choicesTags