5.1 Kinetic Molecular Theory

Gas molecules can easily be compressed  because ___________. 

• gas molecules are soft
• gas molecules are far apart
• gas molecules follow the shape of the container

Gases are described as having a

• definite shape and indefinite volume.

• indefinite shape and indefinite volume.

• definite shape and definite volume.

• indefinite shape and definite volume.

Collisions between gas particles are said to be "elastic" because _________________________.

• they have a stretchy waistband

• kinetic energy is lost between particles

• kinetic energy is not lost between particles

• particles move in a straight line

Which of the following explains why gases are less dense than solids?

• Gases have faster moving particles that are very close together.
• Gases have slow moving particles that are very close together.
• Gases have faster moving particles that are far apart.
• Gases have slow moving particles that are close together.

Tags

NGSS.HS-PS3-2

The main idea of the Kinetic Molecular Theory is that all molecules have

• mass

• motion

• volume

• moles

Gas particles are in _______________ motion.

• instant and predictable

• logical and reasonable

• constant and random

• perpetual and synchronized

A gas will always _____________ to fill its container.

• expand
• contract
• heat up
• cool down

Tags

NGSS.HS-PS3-2

The key word for pressure is 

• motion
• collisions
• concentration
• energy

Higher pressure means ______________ collisions between gas particles and the walls of their container.

• more
• less
• faster
• harder

Absolute zero is

• 0 °C

• where there is no molecular movement

• the number of students who understand stoich