Particle Motion

Gage was playing video games in his room. After a little time passed, he began to smell a delicious, warm scent that he knew was his grandma's famous chocolate chip cookies. Why did he smell the cookies when they were baking and not when she was making them?

• The gas particles have a higher temperature after being in the oven, which means less kinetic energy so the particles aren't diffusing quickly.

• Lower temperature means less kinetic energy so no smell

• The gas particles have a higher temperature, which means more kinetic energy, so the particles are moving faster.

• they weren't baking so no kinetic energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Thermal contraction occurs when...

• a substance is cooled, so the particles move closer

• A substance is heated, so the particles move farther

• the substance freezes and particles stop moving

• the temperature of the particles remain room temperature

Tags

NGSS.MS-PS1-4

Why does gas take the shape AND volume of its container?

• gas is a vapor that fills the shape of the container

• gas particles are in constant motion, pushing out in all directions with a large amount of space between them

• gas particles are in constant motion around the universe

• gas is a vapor that fills the volume of the container

The hypothetical point at which all matter would stop moving.

• zero degrees

• negative 100 degrees

• absolute zero

• absolute hero

Total distance divided by total time, for an object shows:

• acceleration

• the size of one's toupee

• absolute speed

• average speed

Tags

NGSS.MS-PS3-1

What does this graph represent?

• Constant Speed

• Acceleration

• Deacceleration

• Not moving

Tags

NGSS.MS-PS3-1

What phase has the slowest moving molecules and the molecules most packed together?

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

At what phase are molecules the most spaced apart and moving their fastest?

• solid

• liquid

• gas

When you heat a substance, its molecules move faster and spread apart, making the density...

• increase

• decrease

• stay the same

Tags

NGSS.MS-PS1-4

As temperature rises ___________.

• an atom's kinetic energy stays the same

• an atom's kinetic energy increases

• an atom's kinetic energy decreases

• an atom's mass increases

Tags

NGSS.MS-PS1-4