Podcast
Questions and Answers
What is a phase change?
What is a phase change?
- The process of changing the shape of a substance
- The process of a substance gaining or losing energy causing molecules or atoms to come closer or move apart (correct)
- The process of a substance changing from a solid to a liquid state
- The process of changing the chemical composition of a substance
What happens when a gas loses energy?
What happens when a gas loses energy?
- It becomes a liquid (correct)
- It expands indefinitely
- It becomes a solid
- It becomes a plasma
Why do liquids take the shape of their containers?
Why do liquids take the shape of their containers?
- Due to the lack of energy in liquid molecules
- Because liquids have a definite shape
- Because liquid molecules are highly packed together
- Because liquids have more fluidity of movement (correct)
In which phase do atoms and molecules have the least energy?
In which phase do atoms and molecules have the least energy?
What determines the phase a substance will be in, according to the text?
What determines the phase a substance will be in, according to the text?
What is the process described when a liquid comes to a boil, expelling molecules at a fast rate, creating vapor through vaporization?
What is the process described when a liquid comes to a boil, expelling molecules at a fast rate, creating vapor through vaporization?
Why do pools constantly need water added even when they are not being used?
Why do pools constantly need water added even when they are not being used?
How does sublimation differ from evaporation?
How does sublimation differ from evaporation?
What happens when a hot water bottle is brought into a cool house?
What happens when a hot water bottle is brought into a cool house?
What is the role of intramolecular forces in the process of condensation?
What is the role of intramolecular forces in the process of condensation?
What is the critical point on a phase diagram?
What is the critical point on a phase diagram?
Why is plasma of great interest to scientists?
Why is plasma of great interest to scientists?
What is the process called when a gas turns directly into a solid, skipping the liquid phase?
What is the process called when a gas turns directly into a solid, skipping the liquid phase?
What happens when a substance skips the liquid phase and turns directly into a gas?
What happens when a substance skips the liquid phase and turns directly into a gas?
What is the technical term for the process when a gas cools into a liquid?
What is the technical term for the process when a gas cools into a liquid?
