QUIZ: Thermal Energy

You have two flasks of water. You place a thermometer in the first flask and leave it until the temperature no longer changes. The temperature reads 100 °C. When you move the thermometer to the second flask and again leave it, it also reads 100 °C. Select all correct answers for this scenario.

• The thermometer and the first flask of water are in thermal equilibrium.

• The thermometer and the second flask of water are in thermal equilibrium.

• There is no way to tell whether the two flasks are in thermal equilibrium.

• The thermometer can be in thermal equilibrium only with the first flask.

• The zeroth law states that the two flasks are in thermal equilibrium with each other.

Choose the correct statement as it relates to the energy of a system and a heating curve.

• During a plateau, the internal energy of the system is being lost.

• During a plateau, the internal energy of the particles increases.

• When the curve rises, the substance changes state.

• As the curve rises, energy is not conserved.

A known number of moles of gas is placed in a flexible container. What will happen if some of the gas is removed from the container while the pressure and temperature are kept constant?

• The volume will increase.

• The volume will decrease.

• The volume will stay the same.

The kinetic-molecular theory states that ideal gas molecules do which of the following?

• are in constant, rapid, random motion

• slow down as temperature increases

• exert forces on each other

• lose energy with every collision

Tags

NGSS.HS-PS3-2

Two substances have the same temperature. The particles of Substance A have a slower average speed than the particles in Substance B. What can you say about the molar masses of the two substances?

• Their molar masses are the same.

• The molar mass of Substance A is greater than Substance B.

• The molar mass of Substance B is greater than Substance A.

• There is not enough information.

A puddle of water on a sidewalk evaporates in the hot afternoon sunshine. Complete the statement to describe what is happening.

Before the phase change, thermal energy is ___________by the water, causing it's temperature to ____________

• released, increase

• released, decrease

• absorbed, increase

• absorbed, decrease

Tags

NGSS.MS-PS1-4

A scientist is testing the properties of a gas. Before he performs his experiment, he wants to make claims about the way the gas will behave in different situations. Then, he will compare his claims to his results. Complete each of the claims based on evidence you gathered in this lesson. When the temperature of a gas is held constant, if pressure increases then the volume:

• increases

• decreases

• stays the same

A scientist is testing the properties of a gas. Before he performs his experiment, he wants to make claims about the way the gas will behave in different situations. Then, he will compare his claims to his results. Complete each of the claims based on evidence you gathered in this lesson. A scientist is testing the properties of a gas. Before he performs his experiment, he wants to make claims about the way the gas will behave in different situations. When the volume of a gas is held constant, if pressure increases then the temperature...

• increases

• decreases

• stays the same

Tags

NGSS.HS-PS3-2

When the pressure of a gas is held constant, if temperature increases then the volume...

• increases

• decreases

• stays the same

Solid carbon dioxide changing state to gaseous carbon dioxide is an example of_____________.

• condensation

• sublimation

• evaporation

• liquefaction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4