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- 1. Multiple ChoiceTrue or false: Heat moves from the cooler object to a warmer objectTrueFalse
- 2. Multiple ChoiceIf 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
- 3. Multiple ChoiceAll atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.TrueFalse
- 4. Multiple ChoiceHeat always transfers from hot to cold.TrueFalse
- 5. Multiple ChoiceThe transfer of thermal energy between objects of different temperatures is called...temperatureheatinternal energynone of these
- 6. Multiple ChoiceTrue/False: when two substances reach the same temperature they are in thermal equilibrium.TrueFalse
- 7. Multiple ChoiceTemperature is a measure of the...total energy in a substancetotal kinetic energy in a substanceaverage potential energy in a substanceaverage kinetic energy of molecules in a substance
- 8. Multiple ChoiceFreezing occurs when matter changes from a...gas to a solidsolid to a gasliquid to a gasliquid to a solid
- 9. Multiple Choice
High temperature is connected to:Low kinetic energy.High kinetic energy.Zero net energy.Equal kinetic energies. - 10. Multiple ChoiceWhat letter represents heat?SCTQ
- 11. Multiple ChoiceWhat is 0oC in Kelvin?110 K100 K273 K210 K
- 12. Multiple ChoiceHow much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K21945 J21945 g29678 J29678 g
- 13. Multiple ChoiceA 300g piece of aluminum at 100 oC is placed in a 150g of H2O at 200 oC. The final temp. of the mix is 35 oC. What is the specific heat of the aluminum if the specific heat of the water is 4180 J/kgK?22415 J22415 g32415 J32415 g
- 14. Multiple ChoiceWhich cools at a faster rate, a pot of boiling water left at room temperature or a same-sized pot of warm water left at room temperature?boiling waterwarm waterboth cool at an equal rate
- 15. Multiple ChoicePolystyrene is a good heat...emitterabsorberconductorinsulator
- 16. Multiple ChoiceWhich has the higher specific heat capacity, water or sand?watersandthey are both equal
- 17. Multiple ChoiceTo convert from Celsius to Kelvin:
K = Degrees Celsius + __________251 K275 K213 K273 K - 18. Multiple ChoiceRecall the equation to calculate the change in heat (Thermal Energy) of an equation:
∆Q = mc∆T
If
∆Q = 100 J
m = 10 g
∆T = 2 °C
What is c (in J/kgK) ?20525200 - 19. Multiple Choice12 kilograms = ___ grams10001200012120
- 20. Multiple ChoiceThe following number in scientific notation is
0.0005621 = _____5.621 x 1045.621 x 10-55.621 x 10-456.21 x 102 - 21. Multiple Choice
1 A cup contains hot liquid. Some of the liquid evaporates. What happens to the mass and what happens to the weight of the liquid in the cup?
A
B
C
D
- 22. Multiple Choice
Which statement about evaporation is correct?
Evaporation causes the temperature of the remaining liquid to decrease.
Evaporation does not occur from a cold liquid near its freezing point.
Evaporation does not occur from a dense liquid, such as mercury.
Evaporation occurs from all parts of a liquid.
- 23. Multiple Choice
A gas is stored in a sealed container of constant volume. The temperature of the gas increases. This causes the pressure of the gas to increase.
What happens to the gas molecules during this pressure increase?
The average kinetic energy of the molecules increases.
The average separation of the molecules decreases.
The average separation of the molecules increases.
The volume of each molecule increases.
- 24. Multiple Choice
A
B
C
D
- 25. Multiple Choice
What causes the random, zig-zag movement (Brownian motion) of smoke particles suspended in air?
air molecules colliding with smoke particles
convection currents as the hot smoke rises
smoke particles colliding with each other
smoke particles reacting with oxygen molecules in the air
- 26. Multiple Choice
Which diagram best shows the path of a gas molecule?
A
B
C
D
- 27. Multiple Choice
A rod is made half of glass and half of copper.
Four pins A, B, C and D are attached to the rod by wax. The rod is heated in the centre as shown. The pins fall off when the wax melts. Which pin falls off first?
A
B
C
D
- 28. Multiple Choice
The diagram shows a vacuum flask used to keep liquid hot.
How does thermal energy pass through the vacuum?
conduction only
convection only
radiation
conduction and convection
- 29. Multiple Choice
substance loses thermal energy (heat) to the surroundings at a steady rate. The graph shows how the temperature of the substance changes with time.
What could the portion PQ of the graph represent?
A gas condensing
gas cooling
liquid cooling
liquid solidifying
- 30. Multiple Choice
The pressure of a fixed mass of gas in a cylinder is measured. The temperature of the gas in the cylinder is then slowly increased. The volume of the cylinder does not change. Which graph shows the pressure of the gas during this process?
A
B
C
D
- Answer choicesTagsAnswer choicesTags