6.P.2.2 States of Matter Review

A liquid wax droplet falls from a candle and lands on a tabletop. The liquid wax becomes solid after a few seconds of contacting the table. Which choice best explains the heat transferred in this scenario?

• A. Heat transferred from the table to the wax, causing the motion of the wax’s particles to increase.

• B. Heat transferred from the wax to the table, causing the motion of the wax’s particles to increase.

• C. Heat transferred from the table to the wax, causing the motion of the wax’s particles to decrease.

• D. Heat transferred from the wax to the table, causing the motion of the wax’s particles to decrease.

Tags

NGSS.MS-PS1-4

What happens to a solid piece of metal when it is heated?

• A. The speed of the metal’s atoms increases, and the metal expands.

• B. The speed of the metal’s atoms decreases, and the metal expands.

• C. The speed of the metal’s atoms increases, and the metal contracts.

• D. The speed of the metal’s atoms decreases, and the metal contracts.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A sheet of pure aluminum loses heat. What will happen to the aluminum atoms?

• A. The atoms will solidify.

• B. The atoms will evaporate.

• C. Their motion will increase.

• D. Their motion will decrease.

Tags

NGSS.MS-PS1-4

What will happen to water molecules as the temperature of a water sample increases?

• The molecules will grow.

• The molecules will shrink.

• The molecules will move faster.

• The molecules will move slower.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to a solid, room-temperature steel bar as it absorbs heat?

• The steel does not permit the absorption of heat, which causes it to melt.

• The steel does not permit the absorption of heat, which causes it to sublimate.

• The steel’s particles vibrate faster, which causes these particles to move farther apart.

• The steel’s particles vibrate slower, which causes these particles to move closer together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A scientist places a pot containing liquid water onto a hot plate that is turned on. What will happen to the water molecules as the liquid water absorbs heat?

• The molecules will become larger.

• The molecules will move at a faster rate.

• The molecules will occupy fixed positions.

• The molecules will separate into hydrogen and oxygen atoms.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

What happens to liquid water as it freezes?

• the water's mass increases

• the water absorbs more heat than it emits

• the water molecules' arrangement changes

• the water molecules break down into single atoms

Tags

NGSS.MS-PS1-4

James places a pot containing water onto a hot stovetop. The water begins to boil after a few minutes. James observes that the water temperature is 100°C once the water begins to boil. How does the heat from the hot stovetop affect the water as the water continues to boil?

• All of the heat will be used to make the water temperature increase to 200°C.

• All of the heat will be lost to the atmosphere, and the water temperature will remain at 100°C.

• Some of the heat will be used to transition the liquid water into a vapor, and the water temperature will remain at 100°C.

• Some of the heat will be used to transition the liquid water into a

  vapor, and any extra heat will increase the water temperature to

  200°C.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Tommy has a brown cup and a green cup. Each cup contains an equal amount of water. The temperature of the water in the brown cup is 10°C. The temperature of the water in the green cup is 30°C. Tommy places the brown cup next to the green cup so that the cups touch each other. How will heat flow between the cups?

• Heat will flow from the brown cup to the green cup, and the particles in the brown cup will slow down.

• Heat will flow from the brown cup to the green cup, and the particles in the brown cup will speed up.

• Heat will flow from the green cup to the brown cup, and the particles in the brown cup will slow down.

• Heat will flow from the green cup to the brown cup, and the particles

  in the brown cup will speed up.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A teacher placed a pot containing liquid water onto a hot stove This table shows water temperature measurements recorded by the teacher. Why did the water temperature remain constant after 3 minutes?

• The water boiled at 3 minutes, so any heat added to the water after this time would be used to transition the liquid into a gas.

• The water melted at 3 minutes, so any heat added to the water after this time would be used to transition the liquid into a solid.

• Heat could not be transferred to the water after 3 minutes, which means that the pot must have absorbed all the heat from the stove.

• Heat could not be transferred to the water after 3 minutes, which means that the atmosphere must have absorbed all the heat from the stove.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5