States of Matter & Solutions-Phase Changes-Quiz

At what temperature does the solid start melting? -20°C

0°C

Which diagram represents the phase that occurs after a solid melts?

1

Which arrows represent the phase transitions in which heat energy is gained?

1, 2, 3

In which region is the substance in both the solid phase and the liquid phase?

2

Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?

4

Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?

5

Which best explains the relationship between evaporation and temperature?

A liquid evaporates faster at higher temperatures because more particles have a higher speed and can overcome attractions in the liquid.

Which energy change occurs during boiling?

Heat energy is absorbed by the substance.

Which best describes the energy change that takes place during deposition?

Heat energy is released by the substance.

Consider the statement below."When nitrogen is liquefied, heat is released."Is this statement true or false?

It is true because heat is released when a gas changes to a liquid.

Which statement best describes the process that arrow 1 represents?

Molecules are speeding up as boiling occurs.

At what temperature is the boiling point of this substance?

at 120°C

When does carbon dioxide absorb the most heat energy?

during sublimation

Jean has a sample of a liquid. If she changes the liquid's phase by ___________it, the molecules will spread out, allowing the sample to expand and fill a container of any shape or volume.

evaporating

Which example involves a phase change in which heat energy is released by the substance?

freezing ice cream

is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?

from gas to liquid

A solid substance turns directly into a gas. Which term describes this change?

sublimation

In which phase transition do molecules move directly from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?

sublimation