
Phases of Matter and Supercritical Fluids Explored Through Phase Diagrams

Interactive Video
•
Physics, Chemistry, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do phase diagrams help us predict about an element?
Its atomic number
Its phase based on temperature and pressure
Its chemical composition
Its color
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what point do all three phases of a substance coexist in equilibrium?
Boiling point
Critical point
Melting point
Triple point
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a supercritical fluid?
A liquid that evaporates at low temperature
A substance that behaves like a gas but dissolves like a liquid
A gas that cannot dissolve substances
A solid that melts at high pressure
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are supercritical fluids advantageous compared to regular liquids?
They flow more easily and are unaffected by surface tension
They are cheaper to produce
They have a higher boiling point
They are denser
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one application of supercritical CO2?
Producing synthetic diamonds
Preserving food
Decaffeination of coffee beans
Increasing the boiling point of water
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does supercritical CO2 help in decaffeination?
It freezes the caffeine
It changes the color of caffeine
It dissolves caffeine and releases it when pressure drops
It burns off the caffeine
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What phenomenon is observed near the critical point of a substance?
Solidification
Critical opalescence
Evaporation
Phase separation
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