Study the scenario.
The particles in a system are moving around very slowly. A few minutes later, the particles are moving, on average, much faster.
How does this change in motion affect the temperature of the system?
Responses
it is not possible to tell since temperature is a result of the fastest moving particles in a system, not the average
it is not possible to tell since temperature is a result of the fastest moving particles in a system, not the average
the temperature decreases since the average kinetic energy of the particles increases
the temperature decreases since the average kinetic energy of the particles increases
the temperature increase since the average kinetic energy of the particles increases
the temperature increase since the average kinetic energy of the particles increases
the temperature remains the same since temperature is a measure of potential energy of a system, not the movement of its particles
the temperature increases since the average kinetic energy of the particles increases
Which statement correctly explains the differences in the molecular motion of solids and liquids using the kinetic theory?
Responses
Molecules move slower in liquids, and faster in solids. Moving molecules store kinetic energy, so molecules in a liquid have less energy than those molecules in a solid state.
Molecules move slower in liquids, and faster in solids. Moving molecules store kinetic energy, so molecules in a liquid have less energy than those molecules in a solid state.
Molecules move slowest in liquids, and fastest in solids. Moving molecules store kinetic energy, so molecules in a liquid state have less energy than those molecules in a solid state.
Molecules move slowest in liquids, and fastest in solids. Moving molecules store kinetic energy, so molecules in a liquid state have less energy than those molecules in a solid state.
Molecules move slowest in solids and faster in liquids, Moving molecules store kinetic energy, so molecules in a liquid state have less energy than those molecules in a solid state.
Molecules move slowest in solids and faster in liquids, Moving molecules store kinetic energy, so molecules in a liquid state have less energy than those molecules in a solid state.
Molecules move slowest in solids and faster in liquids Moving molecules store kinetic energy, so molecules in a solid state have less energy than those molecules in a liquid.
Molecules move slowest in solids and faster in liquids, Moving molecules store kinetic energy, so molecules in a liquid state have less energy than those molecules in a solid state.
The kinetic energy that comes from the vibration of particles in a system is known as __________.
Responses
specific heat
specific heat
thermal energy
thermal energy
mechanical energy
mechanical energy
heat
thermal energy
Which choice correctly describes what happens during cooling?
Responses
If two systems are at different temperatures, energy will leave the system with greater thermal energy and go into the system with less thermal energy.
If two systems are at different temperatures, energy will leave the system with greater thermal energy and go into the system with less thermal energy.
Thermal energy moves from one system into the other until the amount of energy in the two systems is reversed.
Thermal energy moves from one system into the other until the amount of energy in the two systems is reversed.
The thermal energy found in each system remains the same, but heat is transferred into the system with the lesser thermal energy.
The thermal energy found in each system remains the same, but heat is transferred into the system with the lesser thermal energy.
If two systems are at different temperatures, energy will leave the system with less thermal energy and go into the system with greater thermal energy.
If two systems are at different temperatures, energy will leave the system with greater thermal energy and go into the system with less thermal energy.
The amount of heat required to convert gold from a solid to a liquid is 64 kJ/kg. What is the effect of adding 50 kJ of thermal energy to 1 kg of gold that has just reached its melting temperature?
Responses
The addition of 50 kJ of thermal energy will allow some of the gold to change from a solid to a liquid. The temperature of the gold will also rise.
The addition of 50 kJ of thermal energy will allow some of the gold to change from a solid to a liquid. The temperature of the gold will also rise.
The addition of 50 kJ of thermal energy will allow all of the gold to change from a solid to a liquid. The temperature of the gold will not change.
The addition of 50 kJ of thermal energy will allow all of the gold to change from a solid to a liquid. The temperature of the gold will not change.
The addition of 50 kJ of thermal energy will only allow some of the gold to change from a solid to a liquid. The temperature of the gold will not change.
The addition of 50 kJ of thermal energy will only allow some of the gold to change from a solid to a liquid. The temperature of the gold will not change.
The addition of 50 kJ of thermal energy will allow all of the gold to change from a solid to a liquid. The temperature of the gold will also increase.
The addition of 50 kJ of thermal energy will allow some of the gold to change from a solid to a liquid. The temperature of the gold will also rise.
Examine the graph of the heating curve of water and scenario.
A temp-energy graph with five sections. Section A, labeled solid, goes from up from -10 degrees Celsius to zero degrees. Section B is horizontal at 0 degrees, connecting A and C. Section C, labeled liquid, goes from 0 to 100 degrees. Section D is horizontal at 100 degrees, connecting C and E. Section E, labeled gas, goes from up from 100 degrees through 200 degrees.
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You have a small sample of steam inside a container. It is currently in the E section of the graph. You remove heat energy so that it is in D on the graph.
Which choice most accurately describes the state of the sample while it’s in D?
Responses
It will have changed completely into liquid water and the temperature will not change while it’s in D.
It will have changed completely into liquid water and the temperature will not change while it’s in D.
It will be in the process of condensing into water. Some of the sample will be a gas and some will be liquid. Its temperature will not change while it’s in D.
It will be in the process of condensing into water. Some of the sample will be a gas and some will be liquid. Its temperature will not change while it’s in D.
It will be in a gaseous state and the temperature will be changing while it’s in D.
It will be in a gaseous state and the temperature will be changing while it’s in D.
It will be in the process of condensing into water. Some of the sample will be liquid and some will be solid. The temperature of the sample will be changing while it’s in D.