In which state of matter are the molecules spaced farthest apart?

• Solid

• Liquid

• Gas

• All are equal

Basic state of matter with the greatest amount of energy.

• solid

• liquid

• gas

As a substance heats up, its molecules become _____ dense, and move _____.

• more, faster

• less, slower

• less, faster

• more, slower

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The particles of a solid metal spoon vibrate faster when heat is added.

• True

• False

Tags

NGSS.MS-PS1-4

If two objects have different temperatures, heat will flow from the warmer object to the cooler object until

• One object runs out of energy

• One object reaches a temperature of zero

• They both have an equal temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What state is represented?

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS1-4

__________ is the average kinetic energy of particles in an object.

• Color

• Temperature

• Shape

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What do the arrows in the model represent?

• The speed and direction of the particles

• The size of the particles

• The boiling point

Tags

NGSS.MS-PS1-4

Thermal expansion

• Particles gain kinetic energy and move apart

• Particles lose kinetic energy and move closer together

Tags

NGSS.MS-PS1-4

Thermal contraction

• Particles gain kinetic energy and move apart

• Particles lose kinetic energy and move closer together

Tags

NGSS.MS-PS1-4