Kinetic Molecular Theory

Atoms in motion have kinetic energy and their motion __________ as they gain energy.

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

If you add heat, energy ____________, so atoms move faster.

• decreases

• increases

• stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which is Principle 4?

• Collisions between atoms are perfectly elastic (no energy is lost)

• There is a transfer of energy as atoms collide.

• Molecular motion is greatest in gas, less in liquids and least in solids.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

Principle 5: Collisions between atoms are perfectly ________ (no energy is lost)

• stretchable

• dangerous

• elastic

• unknown

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Molecular motion ___________ is in gas, less in liquids and least in solids.

• greatest

• less

• least

Tags

NGSS.MS-PS1-4

Molecular motion is least in ____________

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

If you remove heat, energy decreases so atoms move ______________

• faster

• slower

• stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which among the following is NOT true regarding the Kinetic Molecular Theory of gases?

• Gases particles move in straight lines.

• Gas particles are closely packed and their motion is orderly.

• Gas particles are in constant motion.

• Gas particles do not attract or repel each other.

Tags

NGSS.MS-PS3-5

This one is tricky!

The temperature of each flask is given in Kelvin (K). Think about how temperature affects the motion of gas particles. Now think about what causes gas pressure....

Which of the following statements is correct?

• Flask 1 has the lowest pressure

• Flask 3 has the lowest pressure

• Flask 2 has the lowest pressure

• Flask 4 has the lowest pressure

Tags

NGSS.MS-PS1-4

Which of the following is true regarding the kinetic molecular theory of gases?

• Gas particles are attracted to one another.

• Gases consist of closely spaced particles.

• Gas particles move around in an orderly manner.

• The temperature of a gas depends on the average kinetic energy of the gas particles.

Tags

NGSS.HS-PS2-1