Carbon and Its Components
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Questions and Answers

What is the atomic number of carbon?

  • 8
  • 6 (correct)
  • 7
  • 5

    • What is the primary greenhouse gas released from the burning of carbon-based fuels?

  • Nitrogen
  • Oxygen
  • Carbon dioxide (correct)
  • Methane

    • Which of the following is a common allotrope of carbon?

  • Sulfur
  • Graphite (correct)
  • Hydrogen
  • Oxygen

    • What is the chemical formula of carbon dioxide?

    <p>CO2</p> Signup and view all the answers

    What happens when carbon dioxide dissolves in water?

    <p>It forms carbonate and mainly bicarbonate (HCO−3)</p> Signup and view all the answers

    What is the primary carbon source for life on Earth?

    <p>Atmospheric CO2</p> Signup and view all the answers

    What is the current concentration of carbon dioxide in Earth's atmosphere?

    <p>421 parts per million (ppm)</p> Signup and view all the answers

    What is the primary cause of increased CO2 concentrations in the atmosphere?

    <p>Burning fossil fuels</p> Signup and view all the answers

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