An ice cube is placed in a glass, where it slowly begins to melt. What is true about motion of the particles in the ice cube as it changes state?

• The particle motion stops.

• The particle motion increases.

• The particle motion decreases.

• The particle motion remains the same.

Tags

NGSS.MS-PS1-4

A substance changed from one state to another. The image shows its particle motion in the first state and the second state. How is the transition between state 1 and state 2 best deescribed?

• solid state to liquid state

• liquid state to solid state

• liquid state to gaseous state

• gaseous state to solid state

Tags

NGSS.MS-PS1-4

A student is examining three diagrams that show particle arrangments in a solid, liquid, and gas. Which letter sequence shows decreasing energy of the particles?

• S, Q, R

• Q, S, R

• R, Q, S

• R, S, Q

Tags

NGSS.MS-PS1-4

The waiter poured a glass of ice water. He noticed that the ice was still floating on the top of the water in the glass fifteen minutes later. Why did the waiter find this phenomenon unusual?

• As ice cubes cool the water, the water becomes less dense than the ice; so after fifteen minutes, the ice should have begun to sink.

• Since the components of the compounds cannot be physically seperated, the ice and water should have been evenly distributed.

• The components of ice water have the same chemical formula (H2O), making it a homogeneous mixture; so it should not seperate.

• Most solid substances are more dense as compared to their liquid state, causing the solid to sink in the liquid; so he expected the ice to sink.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter is shown by each sketch?

• A is solid, B is liquid, and C is gas.

• A is gas, B is solid, and C is liquid.

• A is liquid, B is gas, and C is solid.

• A is liquid, B is solid, and C is gas.

The diagram shows the particle vibration of an unknown substance in a container. Which substance can likely be represented by the motion of the particles in the diagram?

• ice

• oil

• water

• water vapor

Tags

NGSS.MS-PS1-4

Which particle arrangement represents a gaseous state?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

Which statement best describes a gas?

• A gas has particles that are close together but can slide past one another.

• A gas has particles that have large distances between them and move freely.

• A gas has particles that are close together but move freely.

• A gas has particles that have no space between them and do not move.

Tags

NGSS.MS-PS1-4

How can phase 1, 2, and 3 be classified?

• 1: ice, 2: liquid water, 3: water vapor

• 1: liquid water, 2: ice, 3: water vapor

• 1: water vapor, 2: ice, 3: liquid water

• 1: water vapor, 2: liquid water, 3: ice

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does the particle motion between a solid and a liquid compare?

• Particles in a solid vibrate in place, while particles in a liquid slide past one another.

• Particles ina solid slide past one another, which particles in a liquid vibrate in place.

• Particles in a solid vibrate in place, while particles in a liquid move randomly in all directions.

• PArticles in a solid move randomly in all directions, while particles in a liquid slide past one another.

Tags

NGSS.MS-PS1-4