S8P1

What process takes solid CO₂ from a solid to a gas?

• boiling

• melting

• sublimation

• vaporization

Tags

NGSS.MS-PS1-4

If you slow the motion of water molecules down, they are more likely to become

• a gas

• hotter

• colder

• absorbed

Tags

NGSS.MS-PS1-4

What must be added to water in order to change state from liquid to a gas?

• more liquid

• energy or heat

• more oxygen atoms

• more hydrogen atoms

Tags

NGSS.MS-PS1-4

The above picture illustrates molecules in motion inside a closed cylinder. Which statement BEST describes what would happen if you were to increase the temperature inside the container.

• The kinetic energy would increase.

• The kinetic would remain constant.

• The potential energy would increase.

• The kinetic and potential energy would remain unchanged.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A lidded glass container is filled with a colored gas. After a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. Next, a warm iron plate is carefully placed under the box.

Why is there resumed movement of the gas in the container?

• The warm iron plate absorbed energy from the gas particles, making them move faster.

• The warm iron plate vibrated due to the energy it had, disturbing the gas in the process.

• Heat from the warm iron plate transferred energy to the gas particles, making them move faster.

• The warm iron plate heated the insulated box causing it to vibrate, disturbing the gas in the process.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Arrange the substances in the table from the MOST to the LEAST ordered particle arrangement.

• wood, water, neon gas

• wood, neon gas, water

• water, wood, neon gas

• water, neon gas, wood

If heat is released from water vapor, what phase change occurs?

• liquid to gas

• solid to gas

• liquid to solid

• gas to liquid

Tags

NGSS.MS-PS1-4

Which statement is a result of a substance melting.

• The attractions between the particles are stronger.

• The average kinetic energy of the particles decreases.

• The particles form a rigid structure where the atoms vibrate.

• The particles are attracted to each other but are fluid and slide past one another.

Tags

NGSS.MS-PS1-4

Select the correct statement to describe when a sample of liquid water vaporizes into water vapor.

• Temperature increases and molecular motion increases while shape becomes less defined

• Temperature increases and molecular motion decreases while shape becomes more defined

• Temperature decreases and molecular motion increases while shape becomes less defined

• Temperature decreases and molecular motion decreases while shape becomes more defined

Tags

NGSS.MS-PS1-4

Which states of matter have particles that move independently of one another with very little attraction?

• gas and plasma

• liquid and gas

• solid, liquid, and gas

• liquid, gas and plasma