This tutorial video covers phase change diagrams, explaining the relationship between temperature and heat energy. It describes the transitions between solid, liquid, and gas phases, highlighting the changes in particle motion and energy. The video includes a review and a quiz to reinforce understanding of kinetic and potential energy changes during phase transitions.

What is the relationship between temperature and heat energy in a phase change diagram?

• Cyclic relationship

• No relationship

• Direct relationship

• Inverse relationship

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What happens to the particles of a solid as it heats up?

• They move closer together

• They lose kinetic energy

• They spread farther apart

• They start to vibrate less

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NGSS.MS-PS1-4

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At what point does a liquid start to boil in the phase change diagram?

• When it starts to evaporate

• When it reaches the gas phase

• When it condenses

• When it turns into a solid

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NGSS.MS-PS1-4

What happens to gas particles as they cool down?

• They turn into a solid directly

• They gain kinetic energy

• They condense into a liquid

• They spread farther apart

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What is the effect on kinetic energy as we go down the phase change diagram?

• It increases

• It remains constant

• It decreases

• It fluctuates

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What happens to potential energy as we go up the phase change diagram?

• It fluctuates

• It increases

• It decreases

• It remains constant

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At which point in the phase change diagram do solid and liquid exist at equilibrium?

• Point A

• Point C

• Point D

• Point B

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NGSS.MS-PS1-4

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At which point in the phase change diagram do liquid and gas exist at equilibrium?

• Point D

• Point A

• Point C

• Point B

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NGSS.MS-PS1-4

What phase of matter is present at Point C in the phase change diagram?

• Plasma

• Solid

• Liquid

• Gas

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NGSS.MS-PS1-4

What occurs at Point D as you go up the phase change diagram?

• Solidification

• Condensation

• Boiling

• Freezing

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NGSS.MS-PS1-4

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