Which statement best describes the fact that gases can be compressed?

• The particles in a gas do not have a fixed volume.

• The particles in a gas are very far apart.

• The particles in a gas have no force of attraction (bonds) between them.

• The particles in a gas are constantly moving very rapidly.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A substance has a boiling point of 90°C. What changes occur when it is heated from 50°C to 120°C?

• energy of particles increase; attractive forces decrease

• energy of particles decrease; attractive forces increase

• energy of particles increase; attractive forces increase

• energy of particles decrease; attractive forces decrease

Tags

NGSS.MS-PS1-4

The three states of matter are represented by diagrams X, Y and Z. Which change occurs during condensation?

• X to Y

• X to Z

• Y to X

• Z to X

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which description best matches this particle model?

• Closely packed and vibrate about a fixed position.

• Particles are close together but can slide past each other.

• Particles have lots of energy and can move around.

Tags

NGSS.MS-PS1-4

When ice melts...

• The mass of the water decreases during melting.

• The mass of the water stays the same before, during and after melting.

• The mass of the water is always changing.

• The mass of the water increases during melting.

Tags

NGSS.MS-PS1-4

Which statement about liquids is correct?

• They have a fixed shape and a fixed volume.

• They have a fixed shape but not a fixed volume.

• They have no fixed shape but they do have a fixed volume.

• They have no fixed shape and no fixed volume.

Which statements describe the arrangement of particles in solids?

• particles are moving in all directions

• Particles are arranged in an orderly manner

• particles can slide over one another.

• particles vibrate about their positions

The particles of gases ________________

• vibrate about their fixed postions

• are able to slide over each other

• move about freely at high speeds and in random direction

• do not move

Tags

NGSS.MS-PS1-4

The particles of liquids ________________

• vibrate about their fixed postions

• are able to slide over each other

• move about freely at high speeds and in random direction

• do not move

Tags

NGSS.MS-PS1-4

The particles of solids ________________

• vibrate about their fixed postions

• are able to slide over each other

• move about freely at high speeds and in random direction

• do not move