Podcast
Questions and Answers
Which of the following is an example of a foam?
Which of the following is an example of a foam?
- Fruit juice
- Sandwich
- Shaving cream (correct)
- Syrup
Sublimation is the process of a gas turning into a liquid.
Sublimation is the process of a gas turning into a liquid.
False (B)
What is a natural example of an aerosol?
What is a natural example of an aerosol?
Sea spray
Dry ice sublimes at __________°C to form gas.
Dry ice sublimes at __________°C to form gas.
Match the following processes with their descriptions:
Match the following processes with their descriptions:
Flashcards
Foam
Foam
A material containing gas bubbles surrounded by liquid or solid. Examples include shaving cream and marshmallows.
Sublimation
Sublimation
The direct change of a solid into a gas without becoming liquid. Dry ice and iodine are examples.
Deposition
Deposition
The reverse process of sublimation. Gas changes directly into a solid. Frost formation is an example.
Aerosol
Aerosol
Signup and view all the flashcards
Phase Change
Phase Change
Signup and view all the flashcards
Study Notes
Foams
- Foams are substances containing gas bubbles surrounded by liquid or solid material
- Examples include shaving cream and marshmallows
Other Foams
- Bread (gas in a solid)
- Whipped cream (gas in a liquid)
- Fire-fighting foams
- Soundproofing foams
Aerosols
- Aerosols include natural examples like sea spray
- Artificial examples like hairspray
- Coronavirus aerosols are tiny virus-containing droplets suspended in the air, capable of transmitting disease
Sublimation
- Sublimation is the direct change of a solid to a gas without becoming liquid
- Dry ice and iodine are examples
Deposition
- Deposition is the reverse process where gas changes directly into a solid
- Frost formation is an example
Iodine Sublimation
- When heated, iodine changes from solid purple crystals to a purple vapor
- This change demonstrates sublimation
- Weak intermolecular forces are responsible for this phenomenon
Dry Ice
- Dry ice (solid CO2) sublimes at -78.5°C
- It forms CO2 gas without becoming a liquid
- Applications include refrigeration and creating fog effects
Natural Selection
- Natural selection is a process where organisms change and develop
- Fossils are evidence that organisms that lived years ago existed
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
