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• ### What happens to the internal energy of an ideal gas when it is heated from 0°C to 4°C?

It increases.

### Which of the following best describes the relationship between two systems in thermal equilibrium?

No net energy is exchanged.

273 K

20 K

temperature

### If energy is transferred from a table to block of ice moving across the table, which of the following statements is true?

The ice is cooler than the table.

### Energy transfer as heat between two objects depends on which of the following?

The difference in temperature of the two objects.

### Why does sandpaper get hot when it is rubbed against rusty metal?

Friction is creating the heat.

### If there is no temperature difference between a substance and its surroundings, what has occurred on the microscopic level?

Energy has been transferred from higher-energy particles to lower-energy particles.

### What three properties of a substance affect the amount of energy transferred as heat to or from the substance?

mass, temperature change, specific heat capacity

temperature

100°C

### If two small beakers of water, one at 70°C and one at 80°C, are emptied into a large beaker, what is the final temperature of the water?

between 70°C and 80°C

heat

C

### On a sunny day at the beach, the reason the sand gets hot and the water stays relatively cool is attributed to the difference in which property between water and sand?

specific heat

### Which of two rods has the greatest thermal conductivity?

a rod with electrons that are freer to move from atom to atom than another rod

310 K

0.340°C

20°C

85.3°C

-160°C

### A substance's temperature increases as a direct result of

kinetic energy being added to the particles of the substance.

Joule.

### High temperature is related to

high kinetic energy.

### The figure above shows how the temperature of 10.0 g of ice changes as energy is added. Which of the following statements is correct?

The water absorbed energy continuously, but the temperature increased only when
all of the water was in one phase.

conduction

31°C.

vibrational

### What are the energies associated with atomic motion called?

internal energy

### As the temperature of a substance increases its volume tends to increase due to

thermal expansion.

36°F

-40.0°

### How is energy transferred as heat always directed?

from an object at high temperature to an object at low temperature

conduction

### To which of the following is high temperature related?

high particle kinetic energy

### In the presence of friction, not all of the work done on a system appears as mechanical energy. What happens to the rest of the energy provided by work?

The remaining energy causes an increase in the internal energy of the system.

150 J

1.43°C

### Which of the following describes a substance in which the temperature and pressure remain constant while the substance experiences an inward transfer of energy?

substance undergoing a change of state

### Which of the following is true during a phase change?

Temperature remains constant.

B

### The figure above shows how the temperature of 10.0g of ice changes as energy is added. Which of the following statements is correct?

The water absorbed energy continuously, but the temperature increased only when all of the water was in one phase.

### Using the figure above, determine which value equals the latent heat required to change the liquid water into steam.

22.6 x 10^3 J

### Which thermodynamic process takes place at constant volume so that no work is done on or by the system?

isovolumetric

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