States of Matter and Thermal Energy

Which phase of matter has the most Kinetic Energy?

• plasma

• liquid

• solid

• gas

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of these is an accurate statement?

• atom A has more protons than atom b

• atom A has one less proton and one more neutron than atom B

• atom A has an extra neutron than atom B

• atom A has one more proton and one more electron than atom B

Tags

NGSS.MS-PS1-1

If you slow the motion of water molecules down, they are more likely to become

• a gas

• hotter

• colder

• absorbed

Tags

NGSS.MS-PS1-4

Which state has the least amount of Kinetic Energy?

• gas

• liquid

• solid

• plasma

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Sam wants to show his brother how water changes state and changes from a liquid to a gas. What is the BEST way for Sam to show this change?

• add ice to a bowl of water

• heat a pot of water on the stove

• put a bowl of water in the freezer

• place a covered bowl of water on the table

Tags

NGSS.MS-PS1-4

You removed a Coke can from the refrigerator. When you come back a few minutes later, you realize the can has begun to "sweat". In other words, moisture forms on the outside of the can. Select ALL of the statements that describe the formation of condensation on the can.

• Water vapor in the air gains energy, causing it to form condensation on the can.

• As water molecules in the air come in contact with the cold can, they will slow down.

• As water molecules in the warm air collide with the cold can, they will lose energy and become colder.

• Vapor molecules in the air are attracted to water molecules on the can, causing them to bind to the can.

• Condensation on the can comes from water vapor in the air cooling and slowing and becoming liquid on the outside of the can.

Tags

NGSS.MS-PS1-4

If heat is released from water vapor, what phase change occurs?

• liquid to gas

• solid to gas

• liquid to solid

• gas to liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement is true about a liquid but not a gas?

• It has more internal energy than the solid state.

• It will change shape and take the shape of its container.

• It allows particle to move past each other relatively easily.

• It has close to a constant volume as pressure is applied to it.

When ice melts, what happens to the water molecules?

• The attractions between the water molecules weaken.

• The kinetic energy of the water molecules decreases.

• The attractions between the water molecules get stronger.

• The water molecules break free of all attractions to each other and get very far apart.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Orange juice is a heterogeneous mixture. Because it contains particles of pulp as well as liquid, its composition is not uniform throughout. Select ALL of the other heterogenous mixtures.

• soil

• steel

• concrete

• Kool aid

• open can of soda