1.05 Kinetic Molecular Theory Review

Select three true statements about kinetic energy.

• As kinetic energy of particles go up, the substance temperature goes up.

• Kinetic energy is stored

• Kinetic energy is energy of motion

• Gases have the highest KE

• Solids have the highest KE

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NGSS.MS-PS1-4

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Which state of matter is represented by this picture?

• Solid

• Liquid

• Gas

Which state of matter has particles with the lowest kinetic energy?

• Solid

• Liquid

• Gas

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

Which statement is true about liquids?

• Their particles have more KE than gases

• Their particles have more KE than solids

• Their particles are closer together than solids

• Temperature of a substance would be higher in the liquid phase vs. the gas phase

As molecules move faster, what happens to their spacing?

• They move closer together

• They don't change

• They move further apart

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NGSS.MS-PS1-4

States of matter never change, even when temperature or pressure change.

• True

• False

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NGSS.MS-PS1-4

Which two statements apply to the melting phase change?

• particle motion increases

• substance temperature decreases (cooling down)

• substance temperature increases (warming up)

• particle motion decreases

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NGSS.MS-PS1-4

Which phase change is the opposite of melting?

• Condensation

• Vaporization (evaporation/boiling)

• Freezing

• Sublimation

Which two phase changes happen because energy leaves or is removed from the substance?

• Freezing

• Condensation

• Vaporization (Boiling/Evaporation)

• Melting

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NGSS.MS-PS1-4

If pressure increases, which of the following statements would be true?

• Gases can become liquids

• Liquids can become gases

• Solids can become liquids

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NGSS.MS-PS1-4