Kinetic Theory

Particles are always moving.

• True

• False

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Which of the following statements about the particles of a gas is true?

• The particles vibrate about a fixed position.

• The particles are far apart and move freely.

• The particles are packed close together, but in a disorderly arrangement.

• The particles are stationary and orderly.

An inflated balloon is placed in a refrigerator. Which statement the movement of the gas particles in the balloon?

• The particles move faster and become further apart.

• The particles move more slowly and become further apart.

• The particles move faster and become closer together.

• The particles move more slowly and become closer together.

Tags

NGSS.MS-PS1-4

When gas particles collide with other particles, they ...

• Travel in a spiral.

• Lose energy and move slowly.

• Stop motion.

• Rebound in a straight line.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS2-1

NGSS.MS-PS3-5

A substance Y has a melting point of -7 degrees Celsius and a boiling point of 63 degrees Celsius. At which temperature is Y a liquid?

• -25

• 25

• 75

• 150

Tags

NGSS.MS-PS1-4

Which phase change occurs between points D and E if heat is removed?

• Freezing

• Melting

• Boiling

• Condensation

Tags

NGSS.MS-PS1-4

What phase change occurs between points B and C if heat is added?

• Freezing

• Melting

• Boiling

• Condensing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Thermal energy always moves from :

• Warm object to cool object

• Object with low KE to object with high KE

• Cool object o warm object

• Object with high mass to object with low mass

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

A __________ has a definite shape and a definite volume.

• Gas

• Liquid

• Solid

• Plasma

Two flasks each contain water at 25 degrees Celsius. Which one has more heat energy?

• They have the same heat energy because they are the same temperature.

• The one on the right has more heat energy because it has less water.

• The one on the left has more heat energy because it has more water.

Tags

NGSS.MS-PS3-4