Brownian motion

1. Which key term describes the random movement of particles?

• a) Diffusion
• b) Osmosis
• c) Brownian Motion
• d) Absolute zero �

3. Identify the states of matter where Brownian Motion can occur.

• a) Solid, liquid, gas
• b) Liquid, gas
• c) Solid, gas
• d) Solid, liquid

4. What is the major problem with trying to observe Brownian Motion?

• a) Molecules are moving too fast
• b) Molecules are moving too slow
• c) Molecules are too big to observe
• d) Molecules are too small to observe

Particles (molecules) in a ______________________ have more energy than the other states of matter.

• gas
• solid
• liquid

Tags

NGSS.MS-PS1-4

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The speed of the molecules determines the _____.

• volume
• density
• pressure
• temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The slower the particles in a substance move,

• the colder it is.
• the warmer it is.
• the more energy it has.
• the less energy it has.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In which state can the particles only vibrate ?

• Solid

• Liquid

• Gas

• Plasma

In which two states are the particles randomly arranged ?

• Solid and gas

• Liquid and solid

• Liquid and gas

• Gas and solid

Which two states don't have a fixed shape ?

• Gas and liquid

• Liquid and solid

• Solid and gas

• None of the above