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Questions and Answers
Which of these gases is used to make bright, colorful lights?
Which of these gases is used to make bright, colorful lights?
- Oxygen
- Nitrogen
- Argon
- Neon (correct)
Carbon dioxide is used to put out fires because it supports burning.
Carbon dioxide is used to put out fires because it supports burning.
False (B)
What is the primary function of oxygen in living organisms?
What is the primary function of oxygen in living organisms?
Respiration
______ is a gas that is used to fill decorative balloons and weather balloons due to its lightweight nature.
______ is a gas that is used to fill decorative balloons and weather balloons due to its lightweight nature.
Match the gases with their primary uses:
Match the gases with their primary uses:
Flashcards
Nitrogen
Nitrogen
A gas used to make fertilizers and explosives.
Oxygen
Oxygen
A gas essential for respiration and supporting burning.
Carbon Dioxide
Carbon Dioxide
A gas used in photosynthesis and making dry ice, also adds fizz to drinks.
Water Vapor
Water Vapor
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Helium
Helium
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Study Notes
Importance of Gases in Air
- Nitrogen: Used to make fertilizers and explosives
- Oxygen: Used for respiration and supports burning, also causes rusting
- Carbon Dioxide: Used for photosynthesis, putting out fires, making dry ice, and making breads and cakes rise. Also used to add fizz to beverages.
- Water Vapour: Used to make rain clouds, takes part in many chemical reactions in plants and animals, transport materials in plants and animals, and removes waste from plants and animals.
Other Gases
- Neon: Used to make bright lights; glows when electricity flows through a tube
- Argon, Krypton, Xenon: Used in light bulbs because they do not react with metals, even when they get very hot.
- Helium: Used to fill decorative balloons and weather balloons and also deep-sea diving mixtures because it is very light. Can be mixed with oxygen, nitrogen, or other gases as a safer alternative to pure oxygen
- Hydrogen: Used to make margarine and fertilizers. Does not exist in our atmosphere beyond the space that we normally consider air.
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