PHET - KINETIC MOLECULAR THEORY

Look at your pressure readings; how do the wall collisions and the pressure readings compare? Is there a relationship between the two? If so, what is the relationship?

• There is no relationship between wall collisions and pressure readings.

• Wall collisions increase as pressure readings increase.

• Wall collisions decrease as pressure readings increase.

• Wall collisions remain constant regardless of pressure readings.

Tags

NGSS.HS-PS2-3

Based on your answer to #5, what would be a good definition of Pressure in terms of gas particles and wall collisions?

• Pressure is the force exerted by gas particles per unit area on the walls of the container.

• Pressure is the volume occupied by gas particles in a container.

• Pressure is the temperature of gas particles in a container.

• Pressure is the weight of gas particles in a container.

How do temperature and pressure compare in your charts above? Is there a relationship between these variables?

• Temperature and pressure are directly proportional.

• Temperature and pressure are inversely proportional.

• There is no relationship between temperature and pressure.

• The relationship varies depending on other factors.

Compare your charts for HEAVY and LIGHT particles. Which of the following statements is true? a. Both charts show similar patterns for heavy and light particles. b. The charts show different patterns for heavy and light particles. c. Heavy particles and light particles behave the same way. d. Heavy particles and light particles behave differently.

• Both charts show similar patterns for heavy and light particles.

• The charts show different patterns for heavy and light particles.

• Heavy particles and light particles behave the same way.

• Heavy particles and light particles behave differently.

Tags

NGSS.HS-PS2-2

Absolute Zero: What happens to Temperature, pressure, and movement when you change the temperature to zero Kelvin?

• Temperature becomes zero, pressure drops to zero, and molecular movement stops.

• Temperature becomes zero, pressure increases, and molecular movement increases.

• Temperature remains constant, pressure drops to zero, and molecular movement stops.

• Temperature becomes zero, pressure drops to zero, and molecular movement increases.

Absolute Zero: Based on this information, How would you describe absolute zero to someone who is new to this class?

• The temperature at which all molecular motion stops

• The point where water freezes

• The average temperature of outer space

• The temperature at which water boils

Absolute Zero: What do you think: Is it possible to reach absolute zero?

• Yes, it is possible to reach absolute zero.

• No, it is not possible to reach absolute zero.

• It is theoretically possible but practically impossible.

• It is possible under certain conditions.

How did the KINETIC energy of our particles change with temperature?

• It increased with temperature.

• It decreased with temperature.

• It remained constant.

• It fluctuated randomly.

Tags

NGSS.HS-PS3-2

The Kinetic Molecular Theory (KMT): What could we use to measure the energy of particles when we are unable to see them?

• Thermometer

• Barometer

• Ruler

• Scale

Gas particles are considered to be in (a)   motion. The gas particle motion is also considered to be (b)   .

• kinetic

• random

• constant

• uniform

Tags

NGSS.HS-PS2-1