What model best depicts a solid with more than 1 type of particle(atom or molecule) within it?

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Answer explanation

The green and Yellow particles could represent another substance in the solid structure.

Tags

NGSS.MS-PS1-1

What models could represent a solid? Choose all that apply.

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Answer explanation

Any model that shows a pattered structure

Tags

NGSS.MS-PS1-1

What models could represent a liquid? Choose all that apply.

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Answer explanation

Any model where there is no pattern or structure. Molecules are close but jumbled and showing movement past each other.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which models best show a liquid mixed with another substance? Choose all that apply.

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Answer explanation

A liquid model that shows more than 1 type of molecule or atom

Tags

NGSS.MS-PS1-2

Which model(s) could show a solid in a liquid? Choose all that apply.

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Answer explanation

A model with atoms or molecules fairly close together with a structured model beneath them.

Tags

NGSS.MS-PS1-4

What statement best explains why water boiled well below the boiling point in the boiling water demo?

• Ice water sped up the molecules of the water, lowering the volume of the water which allowed a lower boiling temperature.

• Ice water lowered the temperature of the gas, which slowed down the gas molecules, making them take up less space and finally lowering the pressure.

• The gas above the water created more pressure when the ice water was poured on it.

• The ice water lowered the pressure of the water. Allowing the water to boil at a lower temperature

Answer explanation

T lowered, V lowered, P lowered

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What phase change happens to dry ice (CO₂) at room temperature?

• Deposition

• Sublimation

• Melting

• Vaporiization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the super heated steam demo, explain why the steam disappeared.

• The molecules stopped coming out of the pipe.

• The molecules were going through condensation so you couldn't see them.

• The kinetic motion of the molecules slowed down so you couldn't see them.

• The kinetic motion of the molecules was too fast to see

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

In the super heated steam demo, which best explains the reason the match ignighted.

• The molecules stopped coming out of the pipe.

• The molecules were moving at a high rate of speed and created enough friction to strike the match.

• The kinetic motion of the molecules slowed down allowing the match to ignite itself.

• The blow torch lit the match.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What term describes a gas changing to a solid? For Example, when water vapor hits glass and frost is formed.

• Deposition

• Sublimation

• Evaporation

• Freezing

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4