Crash Course Particles

Which state of matter has tightly packed molecules?

• solid
• liquid
• gas

Define a liquid.

• Indefinite shape, indefinite volume
• Definite shape, definite volume
• Found in stars
• Definite volume, indefinite shape

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

What is happening when my ice cream changes from a solid to a liquid?

• freezing
• melting
• burning
• evaporation

Tags

NGSS.MS-PS1-4

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still touch.

What term describes a solid changing to a gas?

• Deposition
• Sublimation
• Evaporation
• Freezing

Tags

NGSS.MS-PS1-4

Which has a greater distance between particles?

• Solid
• Liquid

The teacher heats a pot of water. Once the water reaches 100°C, which point has the water reached?

• Boiling
• Melting
• Freezing
• Evaporating

Tags

NGSS.MS-PS1-4

Particles have energy and _________ stop moving

• rarely
• always
• never
• sometimes

Tags

NGSS.MS-PS3-5