7th 1.2

How are the particles in a solid arranged?

• They are packed closely together in fixed positions.
• They are packed loosely together in adjustable positions.
• They are arranged randomly in small clusters.
• They are free to move past each other in all directions.

On a humid day, water vapor in the air collects as liquid drops on the outside of a glass of ice water. What is this process called?

• evaporation
• sublimation
• solidifaction
• condensation

Tags

NGSS.MS-ESS2-4

The temperature at which a liquid changes to gas is its _______.

• boiling point
• melting point
• coefficient of heat
• specific heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In oder to turn oxygen gas to a liquid, it must be _______.

• turned into a solid first
• cooled down
• heated up
• mixed with water

Tags

NGSS.MS-PS1-4

At higher temperatures, gases have ______ energy.

• higher
• lower
• the same
• denser

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the name of the change that occurs when a gas turns into a liquid?

• condensation
• melting
• sublimation
• vaporization

Tags

NGSS.MS-PS1-4

A balloon is filled with helium gas. Which of the following best describes the behavior of the gas molecules inside the balloon?

• They are stuck to the side of the balloon.

• They are closely packed within the balloon.

• They are moving freely, bouncing off of the inside of the balloon.

• They concentrate at the bottom of the balloon.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which states of matter are present in this sealed container?

• solid and gas
• liquid and gas
• solid and liquid
• solid, liquid, and gas

Which of the following best describes the movement of particles in a solid?

• particles can vibrate slightly but are unable to move around.
• particles move past each other freely.
• Particles travel at high speeds in all directions.
• Particles travel at low speed in all directions.

Which change takes place at the freezing point of a substance?

• A gas becomes a liquid.
• A solid becomes a gas.
• A liquid becomes a solid.
• A gas becomes a solid.

Tags

NGSS.MS-PS1-4