7th Grade Unit 2 Lesson 2 Quiz

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

• Ice is less dense than liquid water

• Ice is more dense than liquid water

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

• 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?

• Particles are spaced far apart.

• Particles are constantly moving.

• Shape depends on the countainer.

• Sample does not take shape of the container.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

NGSS.MS-PS3-4

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 closer together 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

Deval drew models of particles in a substance.

Which model best represents the particles in a solid?

• Model A

• Model B

• Model C

• Model D

Tags

NGSS.MS-PS1-1

Deval drew models of particles in a substance.

Which diagram most likely represents the state in which particles are moving fastest?

• Model A

• Model C

• Model D

• Particle speed is not related to state of matter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4