Gas Properties PhET

Instruction: Use the Tire Pump to add molecules into the box and adjust the size of the box using the handle on the left.

Question: What happens to the pressure of a gas when the volume is decreased while the temperature is held constant?

• The pressure increases.

• The pressure decreases.

• The pressure remains the same.

• The gas turns into a liquid.

Instruction: Use the pump on the side to add particles to the box and adjust the temperature using the cup at the bottom.

Question: What happens to the speed of gas particles as the temperature increases?

• The particles move slower.

• The particles stop moving.

• The particles move faster.

• The particles remain at a constant speed.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

Question: According to the ideal gas law, if the temperature of a gas is doubled, what happens to the pressure when the volume is held constant?

• The pressure is halved.

• The pressure is doubled.

• The pressure remains the same.

• The pressure becomes zero.

In the Ideal section, manipulate the number of gas particles and observe the effect on pressure and volume. What happens to the pressure of a gas when the number of gas particles is doubled, assuming the volume and temperature remain constant?

• The pressure is halved.

• The pressure doubles.

• The pressure remains the same.

• The pressure becomes zero.

When the temperature of a gas increases while the volume is held constant, what happens to the pressure in the Ideal section?

• The pressure increases.

• The pressure decreases.

• The pressure stays the same.

• The gas turns into a solid.

Tags

NGSS.MS-PS1-4

In the Explore section, adjust the temperature and volume of the gas and observe how the gas behaves. What happens to the gas when you decrease the temperature while keeping the volume constant in the Explore section?

• The gas particles move faster.

• The gas particles move slower.

• The gas expands.

• The gas condenses.

Tags

NGSS.MS-PS1-4

What happens when gas particles collide in the Explore section?

• The particles lose all their energy.

• The particles exchange energy, but their total energy remains constant.

• The particles stick together.

• The particles stop moving.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS2-1

NGSS.MS-PS3-5

What occurs when the volume of a gas is decreased while the temperature and number of gas particles remain constant in the Explore section?

• The gas expands.

• The gas particles move slower.

• The gas particles move faster.

• The gas pressure decreases.

In the Energy section, adjust the energy of gas particles and observe the effects. What happens to the energy of the gas particles when the temperature is increased in the Energy section?

• The energy of the particles decreases.

• The energy of the particles stays the same.

• The energy of the particles increases.

• The energy of the particles becomes zero.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens when you add energy to the gas particles in the Energy section?

• The particles lose energy and slow down.

• The particles gain energy and move faster.

• The particles stay the same speed.

• The gas particles condense into a liquid.

Tags

NGSS.MS-PS1-4