States of Matter

Which state of matter has the least kinetic energy?

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS1-4

What is the process of matter changing from a **solid** to a **liquid**?

• Crystallization

• Evaporation

• Melting

• Condensation

Tags

NGSS.MS-PS1-4

As temperature increases, what happens to particles?

• They speed up

• They slow down

Tags

NGSS.MS-PS1-4

Which statement is true?

• The quicker a molecule moves, the colder it is.

• The slower a molecule moves, the warmer it is.

• The quicker a molecule moves, the warmer it is.

• The movement of a molecule doesn’t affect its temperature.

Tags

NGSS.MS-PS1-4

What is the measure of the average kinetic energy of particles in a substance called?

• Viscosity

• Temperature

• Density

• Pressure

Tags

NGSS.MS-PS1-4

Dry ice gets its name because it changes directly from a solid to a gas in a process called sublimation.

• True

• False

Tags

NGSS.MS-PS1-4

As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting?

• Heat causes the molecules to expand and forces them apart.

• Heat removes thermal energy from the ice cube and causes it to become liquid water.

• Adding energy causes the bonds between the hydrogen and oxygen in the ice cube to break.

• The transfer of thermal energy to the ice cube causes its molecules to move faster.

Tags

NGSS.MS-PS1-4

Elijah placed an ice cube on the table. When heat is taken away, it remains in this state, it just becomes cooler, molecules slow down.

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS1-4

Which image shows the difference between the speed of molecules in hot and cold water?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-4

In which direction will heat flow naturally between two objects in contact?

• From a colder object to a hotter object

• From a hotter object to a colder object

• Equally in both directions

• There will be no heat flow

Tags

NGSS.MS-PS1-4