Carbon and its Compounds: Chapter 4 Quiz
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Questions and Answers

What is the significance of carbon in both its elemental and combined form?

  • It is necessary for the creation of non-metallic compounds
  • It is essential for the formation of organic compounds (correct)
  • It is crucial for the production of inorganic compounds
  • It is important for the formation of metal alloys

    • Why are most items made up of compounds of carbon?

  • As carbon compounds are resistant to environmental damage
  • Because carbon compounds are more durable than other materials
  • Due to the abundance of carbon in the earth's crust
  • Because carbon forms strong and versatile compounds (correct)

    • What is the composition of the earth's crust in terms of carbon?

  • Carbon constitutes 5% of the earth's crust
  • Only 0.01% of the earth's crust is composed of carbon (correct)
  • The earth's crust has 0.1% carbon content
  • Carbon makes up 1% of the earth's crust

    • Why are food, clothes, medicines, and books mentioned in relation to carbon?

    <p>They are all products derived from carbon-based materials</p> Signup and view all the answers

    What is the test to confirm the presence of a compound containing carbon?

    <p>Combustion test</p> Signup and view all the answers

    What is the distribution of electrons in various shells of carbon?

    <p>2 in the first shell and 6 in the second shell</p> Signup and view all the answers

    How many valence electrons does carbon have?

    <p>4</p> Signup and view all the answers

    What would happen if carbon gained four electrons, forming C4– anion?

    <p>It would attain noble gas configuration</p> Signup and view all the answers

    Why is it difficult for carbon to gain four electrons and form C4– anion?

    <p>It has a large nucleus with six protons</p> Signup and view all the answers

    What determines the reactivity of elements?

    <p>The number of valence electrons</p> Signup and view all the answers

    What is the atomic number of carbon?

    <p>6</p> Signup and view all the answers

    How many valence electrons does carbon have?

    <p>4</p> Signup and view all the answers

    What type of bond does carbon typically form in its compounds?

    <p>Covalent bond</p> Signup and view all the answers

    Which of the following is NOT a property of most carbon compounds?

    <p>Good conductivity of electricity</p> Signup and view all the answers

    Why is it difficult for carbon to form an anion by gaining four electrons?

    <p>It would be difficult for the nucleus to hold onto ten electrons</p> Signup and view all the answers

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