(Q1) 2. Particles in Motion

How do particles move in a liquid/gas?

• all directions and at different speeds

• same direction at different speeds

• all directions but at the same speed

• back and fourth and up and down

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NGSS.MS-PS1-4

What will happen to these particles over time?

• the particles will mix through diffusion

• the particles will stay separated

• the purple particles will move to the top and the oranges to the bottom

• the particles will clump toghther

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NGSS.MS-PS1-4

Compare how the dye will mix in the two beakrs.

• the dye will mix at the same rate by random motion

• the dye will mix at the same rate though diffusion

• the dye will mix faster in the hotter water since the particles are faster

• the dye will mix faster in the cooler water since the particles move easier

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

How can you increase the kinetic energy (KE) of particles?

• add energy so they move faster

• move the particles closer together

• move the particles farther apart

• remove energy so they slow down

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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Compare the kinetic energy (KE) of the two beakers.

• both have the same KE

• the cooler beaker has more KE

• the warmer beaker has more KE

• neither has KE since the particles are sitting still in the beaker

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

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Thermodynamics is the study of...

• heat

• particles

• kinetic energy

• science

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Thermal expansion occurs in...

• solids

• liquids

• gases

• all states of matter

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NGSS.MS-PS1-4

This shows...

• thermal contraction as particles slow down

• thermal contraction as particles get bigger

• thermal expansion as particles get faster

• thermal expansion as particles get bigger

Tags

NGSS.MS-PS1-4

This shows...

• thermal contraction as particles get closer together

• thermal contraction as particles get smaller

• thermal expansion as particles speed up

• thermal expansion as particles change from liquid to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

This shows...

• a gas going through thermal expansion

• a gas going through thermal contraction

• liquid going through thermal expansion

• a liquid changing to a gas

Tags

NGSS.MS-PS1-4