ICP Chemistry Unit 2/3 Test S2

Scarlett is building a sandcastle at the beach. Which substance will hold its shape?

• plasma

• solid

• liquid

• gas

Arjun is conducting an experiment where he adds heat energy to a block of ice over time. The vertical axis of his graph shows an increase in temperature, and the horizontal axis shows the passage of time. At which point in the diagram is the ice melting?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

Harper is observing a pot of water being heated on a stove. What is happening to the temperature at Point C?

• The temperature is not rising because the heat is being used to break the connections between the molecules.

• The temperature is not rising because the molecules are slowing down.

• The temperature is dropping as the molecules break apart from each other.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Abigail is conducting an experiment where she heats a pot of water on the stove. She observes the steam rising from the pot. Which term is defined as the change from liquid water to water vapor?

• condensation

• evaporation

• sublimation

• deposition

Tags

NGSS.MS-PS1-4

Avery is conducting an experiment in her science class. She notices that when she heats a certain substance, it absorbs energy and changes its state. Which type of reaction is Avery observing?

• sublimation

• fusion

• exothermic

• endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

David noticed that the water vapor in his freezer was turning directly into frost on the walls. What is this an example of?

• sublimation

• evaporation

• deposition

• condensation

Which statement best describes the kinetic theory of matter?

• Matter is made up of particles that are in constant motion and have energy.

• Matter is made up of particles that rarely move and do not possess energy.

• Matter is made up of electrons that are in constant motion and have energy.

• Matter is made up of compounds that are in constant motion and have energy.

Tags

NGSS.MS-PS3-1

Evelyn is observing a block of ice. What do the molecules in the ice do?

• hold completely still

• flow freely around each other

• vibrate in place

Tags

NGSS.MS-PS1-4

What is exerted when Aria observes the molecules of a gas colliding with the walls of their container?

• Pressure

• Gravity

• stress

Aria and Avery are hiking up a mountain. Which statement best describes what happens to air pressure as they climb to higher altitudes?

• Air pressure decreases as altitude increases.

• Air pressure increases as altitude increases.

• Air pressure does not change as altitude increases.

• It is impossible to accurately measure air pressure at high altitudes.