HMH Mod J Unit 1.2

Why does solid water (ice) float when placed in liquid water?

• A. Ice is less dense than liquid water.

• B. Ice is more dense than liquid water.

• C. Ice has less mass than the water in which it is floating.

• D. Ice has less volume than the water in which it is floating.

Jada and Brian are using a Venn diagram to organize the information they learned about solids, liquids, and gases. What should they write where all of the states overlap at position 7?

• A. Particles are spaces far apart.

• B. Particles are constantly moving.

• C. Shape depends on the container.

• Sample does not take shape of the container.

Tags

NGSS.MS-PS1-4

Deval drew models of particles in a substance. Which model best represents the particles in a solid?

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• 
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A solid sample of oil is warmed until it turns into a liquid. Which property of the oil will decrease?

• Density

• Volume

• Kinetic energy

• Thermal energy

Tags

NGSS.MS-PS1-4

Which statement explains why a rock does not sink in a lake that is frozen over?

• Particles in a solid are fixed in place

• Particles are much harder in a solid than in a liquid

• Particles are much farther apart in a solid than in a liquid

• Particles in a solid are moving too fast for anything to penetrate them

Ana is creating models to show atoms of solid bromine, liquid bromine, and gaseous bromine. How should her three models differ?

• The size of the atoms should vary depending on the state

• the mass of the atoms should vary depending on the state

• the motion of the atoms should vary depending on the state

• the identity of the atoms should vary depending on the state

Tags

NGSS.MS-PS1-4

The diagrams show the particle arrangement of the same material in three different states of matter. Which diagram most likely represents the state in which particles are moving fastest?

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• 
• 
• D. Particle speed is not related to state of matter.

Tags

NGSS.MS-PS1-4

How are the motions of particles in liquids and gases similar to each other but different from the motion of particles in a solid.

• Gasses and liquids particles are fixed in place and do not move, while solids move freely

• Gasses and liquids particles move freely while solids are fixed in place and only vibrate

• Gasses and liquids particles move freely while solids are fixed in place and do not move

• Gasses and liquids particles are fixed in place and vibrate, while solids move freely

What is the kinetic energy of a solid, liquid, and gas in that order.

• low, medium, high

• high, medium, low

• low, low, high

• high, high, low

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

What would happen to a jar of gas if the lid was removed.

• Stay in the container and take the shape of the container.

• Flow out of the container.

• Stay in the contain and will not take the shape of the container

• None of the above

Tags

NGSS.MS-PS2-2