PS1.3 & PS3.1

When heat energy is added to water in a pot on a stove, what changes occur to the water?

• Particles move faster, and temperature increases.

• Particles move slower, and temperature increases.

• Particles move faster, and temperature decreases.

• Particles move slower, and temperature decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student leaves a bowl of ice cream on a table, where it turns to a liquid. The student places the liquid ice cream back into the freezer overnight. How do the motion of the particles in the ice cream change when it is placed in the freezer?

• The particles slow down and move closer together.

• The particles speed up and move closer together.

• The particles slow down and move farther apart.

• The particles speed up and move farther apart.

Tags

NGSS.MS-PS1-4

How can phases 1, 2, and 3 be classified?

• 1: ice; 2: liquid water; 3: water vapor

• 1: liquid water; 2: ice; 3: water vapor

• 1: water vapor; 2: ice; 3: liquid water

• 1: water vapor; 2: liquid water; 3: ice

Tags

NGSS.MS-PS1-4

The particle diagram represents a phase change of a substance. Between which two phases does the substance change?

• solid to liquid

• liquid to gas

• solid to gas

• gas to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student designs an animation to visualize how the particles in a substance change when heat is added. How can the teacher verify that the animation is accurate?

• Adding heat creates the effect of increased spacing between particles.

• Adding heat creates the effect of increased particle size.

• Adding heat creates the effect of decreased spacing between particles.

• Adding heat creates the effect of decreased particle size.

Tags

NGSS.MS-PS1-4

What does the change from 'before' to 'after' most likely represent?

• Condensation

• Evaporation

• Melting

• Freezing

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which substance has the weakest intermolecular forces between particles?

• table salt

• liquid water

• helium gas

• copper solid

Which model is demonstrating what molecules in a solid look like.

• 
• 
• 

Tags

NGSS.MS-PS1-1

When thermal energy is added to an object the motion of the particles

• A. decreases.

• B. increases.

• C. remains unchanged.

• D. decreases, then increases.

Tags

NGSS.MS-PS1-4

Label the diagram with the correct state of matter.

a

b

c

Gas

Solid

Liquid

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3