S8P1 B

The molecules in a solid substance form

• spherical arrays.

• triangular clusters.

• repeating patterns.

• random groupings.

Tags

NGSS.MS-PS1-1

The particles in a crystalline solid are arranged

• regularly and close together.

• randomly and close together.

• randomly and far apart.

• regularly and far apart.

In an experiment, a science class filled a plastic bottle with room temperature olive oil and placed it in the freezer for two hours. When the bottle was observed at the end of two hours, the volume of the oil had decreased, which caused the bottle to contract. What happened?

• The particles in the olive oil lost energy as they cooled, became less densely aligned, and took up less volume.

• The particles in the olive oil gained energy as they cooled, became less densely aligned, and took up less volume.

• The particles in the olive oil gained energy as they cooled, became more densely aligned, and took up less volume.

• The particles in the olive oil lost energy as they cooled, became more densely aligned, and took up less volume.

Tags

NGSS.MS-PS1-4

The particles of a substance are arranged in a definite geometric pattern and are constantly vibrating. This substance is in its

• gas phase

• solid phase.

• liquid phase.

• plasma phase.

Tags

NGSS.MS-PS1-4

Elizabeth has two separate samples of the same substance. One sample is in the liquid state, and the other is in the solid state. The two samples most likely differ in which property?

• the chemical bonds between atoms within the substances

• the types of atoms that are found within the substances

• the motion of the atoms within the substances

• the size of the atoms within the substances

Tags

NGSS.MS-PS1-4

When water is heated, it turns into a gas called water vapor. What happens to the water particles after the water is heated?

• The particles become close and move slowly.

• The particles bump into each other.

• The particles slide past one another.

• The particles spread far apart and move rapidly

Tags

NGSS.MS-PS1-4

What is a common characteristic of a gas?

• Gases have a definite volume.

• Gases have particles that do not move

• Gases fill up any available space.

• Gases do not mix with each other easily.

Which process represents a time when particles are slowing down and moving closer together?

• melting

• boiling

• evaporation

• condensation

Tags

NGSS.MS-PS1-4

Which of the following describes the difference between the motion of liquid water and water vapor?

• The particles in the liquid do not move, but the particles in a gas can move back and forth.

• The motion of the particles is the same in both states, but they move slower in the gas state

• The particles in a gas can slide past each other, while the particles in a liquid are locked in place.

• The particles in a liquid can slide past each other, while the particles in a gas are free to move in all directions

Tags

NGSS.MS-PS1-4

What phase is represented in sample 3?

• solid

• plasma

• liquid

• gas