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Carbon Family quiz

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Terms in this set (15)

  • What three classifications of elements are found in the carbon family?
    The carbon family contains nonmetals, metalloids, and metals.
  • Which elements in the carbon family form covalent network bonds?
    Carbon, silicon, and germanium form covalent network bonds.
  • What is the general trend in hardness and melting point as you go down the carbon family group?
    Hardness and melting point decrease as you go down the group.
  • What happens to the density of elements in the carbon family as you move down the group?
    Density increases as you move down the carbon family group.
  • What is allotropism?
    Allotropism is the ability of an element to exist in different forms while in the same physical state.
  • What are the two predominant allotropes of carbon found in nature?
    The two predominant allotropes are graphite and diamond.
  • How do the properties of graphite and diamond differ?
    Graphite is a soft black conductor of electricity, while diamond is a colorless insulator and one of the hardest natural materials.
  • What is Buckminster Fullerene (buckyball) and how many carbon atoms does it contain?
    Buckminster Fullerene, or buckyball, is an allotrope of carbon with 60 carbon atoms (C60).
  • Why are diamonds rare and expensive?
    Diamonds are rare and expensive because they require extreme pressure and high temperatures to form.
  • What is catenation and which element in the carbon family exhibits it most strongly?
    Catenation is the ability to form chains of atoms, and carbon exhibits it most strongly in the carbon family.
  • Why do other group 4A elements not form stable chemical chains like carbon?
    As atomic radius increases down the group, bonds become longer and weaker, preventing stable chains.
  • What is the dominant component of vinegar and its chemical classification?
    Acetic acid is the dominant component of vinegar and is classified as a carboxylic acid.
  • What is the effect of carbon monoxide on hemoglobin?
    Carbon monoxide displaces oxygen from hemoglobin, which can lead to carbon monoxide poisoning.
  • What are chlorofluorocarbons and why were they removed from aerosol products?
    Chlorofluorocarbons are compounds of carbon and halogens, and they were removed because they deteriorate the ozone layer.
  • How do silicon atoms connect in silicates and silicones, and what role does oxygen play?
    Silicon atoms connect indirectly via oxygen atoms, which serve as intermediates in both silicates and silicones.