Gases and Their Applications Quiz
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Questions and Answers

What is air made up of?

  • Oxygen, carbon dioxide, water vapour, argon, and other gases
  • Nitrogen, oxygen, carbon dioxide, water vapour, and other gases
  • Nitrogen, oxygen, carbon dioxide, noble gases, water vapour and small amounts of other gases (correct)
  • Oxygen, nitrogen, carbon dioxide, and water vapour

    • Why are living things found on Earth but not on the Moon?

  • The Earth is surrounded by a layer of air while the Moon is not (correct)
  • The Moon has a higher percentage of carbon dioxide in its atmosphere
  • The Moon lacks water vapor and noble gases
  • The Earth has a higher percentage of oxygen in its atmosphere

    • How can we test for oxygen, carbon dioxide, and water vapour in air?

  • By measuring the pH of the air
  • By observing the air's density
  • By studying their properties such as color (correct)
  • By using litmus paper

    • What percentage of air is nitrogen?

    <p>78%</p> Signup and view all the answers

    Which gas is found in small amounts in air?

    <p>Argon</p> Signup and view all the answers

    What is the layer of air surrounding the Earth called?

    <p>Atmosphere</p> Signup and view all the answers

    What is the percentage of water vapour in air?

    <p>Variable</p> Signup and view all the answers

    Which gas is commonly used to test for in air?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the percentage of oxygen in air?

    <p>21%</p> Signup and view all the answers

    Which gas is used in fire extinguishers?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the procedure for testing oxygen and carbon dioxide?

    <p>It involves using various methods</p> Signup and view all the answers

    What is used to test for water and water vapor in the experiment?

    <p>Cobalt chloride paper</p> Signup and view all the answers

    What gas is used to help with breathing difficulties?

    <p>Oxygen</p> Signup and view all the answers

    Which gas is used in producing fog effects?

    <p>Carbon dioxide</p> Signup and view all the answers

    What gas is used in metal cutting?

    <p>Oxygen</p> Signup and view all the answers

    Which gas is used in advertising lights?

    <p>Neon</p> Signup and view all the answers

    What happens to a burning splint in the presence of carbon dioxide?

    <p>It goes out</p> Signup and view all the answers

    What happens to a glowing splint in the presence of carbon dioxide?

    <p>It goes out</p> Signup and view all the answers

    What is the indication of the presence of carbon dioxide when using lime water?

    <p>It turns milky</p> Signup and view all the answers

    What is the indication of the presence of carbon dioxide when using hydrogen carbonate indicator?

    <p>It turns yellow</p> Signup and view all the answers

    What happens to a glowing splint in the presence of nitrogen?

    <p>It continues to glow</p> Signup and view all the answers

    What happens to a burning splint in the presence of air?

    <p>It goes out</p> Signup and view all the answers

    What is the indication of the presence of oxygen when using a burning splint?

    <p>It reignites</p> Signup and view all the answers

    What is the indication of the presence of oxygen when using a glowing splint?

    <p>It reignites</p> Signup and view all the answers

    What is the indication of the presence of nitrogen when using a glowing splint?

    <p>It reignites</p> Signup and view all the answers

    What is the indication of the presence of nitrogen when using a burning splint?

    <p>It goes out</p> Signup and view all the answers

    What is the indication of the presence of air when using a glowing splint?

    <p>It goes out</p> Signup and view all the answers

    What is the indication of the presence of air when using a burning splint?

    <p>It goes out</p> Signup and view all the answers

    Which gas is commonly used to extend the shelf life of packaged foods?

    <p>Carbon dioxide</p> Signup and view all the answers

    Which gas is used to provide an inert atmosphere for manufacturing integrated circuits and LEDs?

    <p>Nitrogen</p> Signup and view all the answers

    What gas is added to beverages to make them carbonated?

    <p>Carbon dioxide</p> Signup and view all the answers

    Which gas is used in fire extinguishers as it displaces oxygen and stops combustion?

    <p>Carbon dioxide</p> Signup and view all the answers

    What gas is used medically in oxygen tanks and masks for patients needing respiratory help?

    <p>Oxygen</p> Signup and view all the answers

    Which gas is used in greenhouses to enhance plant growth?

    <p>Carbon dioxide</p> Signup and view all the answers

    Which gas is slightly denser than air and supports combustion/fire?

    <p>Oxygen</p> Signup and view all the answers

    Which gas is used as an inert gas to displace air and is very unreactive due to a strong triple bond?

    <p>Nitrogen</p> Signup and view all the answers

    Which gas is soluble in water and forms carbonic acid, and is a greenhouse gas that absorbs infrared radiation?

    <p>Carbon dioxide</p> Signup and view all the answers

    Which gas is a reactive oxidizing agent and supports combustion/fire?

    <p>Oxygen</p> Signup and view all the answers

    Which gas is inert, does not support combustion, and is lighter than air?

    <p>Nitrogen</p> Signup and view all the answers

    Study Notes

    Testing Gases and Daily Applications

    • Experiment involves testing properties of oxygen, carbon dioxide, and water vapor
    • Experiment uses materials like test tubes, hydrogencarbonate indicator, and limewater
    • Procedure includes testing for oxygen and carbon dioxide using various methods
    • Results show different properties of oxygen and carbon dioxide
    • Another experiment tests for water and water vapor using cobalt chloride paper
    • There are no simple tests for nitrogen and noble gases
    • Checkpoint involves identifying a gas based on test results
    • Oxygen is used to help with breathing difficulties and in metal cutting
    • Carbon dioxide is used in fire extinguishers and in producing fog effects
    • Solid carbon dioxide changes directly to a gas and is used in metal cutting
    • Neon is used in advertising lights
    • Gases have various daily applications in industry and daily life

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    Science 7.1 Air PDF

    Description

    Test your knowledge of gases and their daily applications with this quiz. Explore experiments involving oxygen, carbon dioxide, and water vapor, as well as their properties and uses. Identify gases based on test results and learn about their practical applications in industry and daily life.

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