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Hydrogen Atom quiz

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Terms in this set (15)

  • What is the most abundant element in the universe?
    Hydrogen is the most abundant element, making up nearly 90% of all elements in the universe.
  • What is the most common form of hydrogen found on Earth?
    The most common form of hydrogen on Earth is H2 gas.
  • What are the atomic number and atomic mass of a hydrogen atom?
    Hydrogen has an atomic number of 1 and an atomic mass of 1.
  • How many neutrons does a typical hydrogen atom have?
    A typical hydrogen atom has 0 neutrons.
  • Name the three naturally occurring isotopes of hydrogen.
    The three isotopes are protium (normal hydrogen), deuterium, and tritium.
  • How many neutrons are in deuterium and tritium?
    Deuterium has 1 neutron, and tritium has 2 neutrons.
  • What type of hydride does hydrogen form when it reacts with metals or boron?
    Hydrogen forms ionic hydrides when it reacts with metals or boron.
  • What is the charge of the hydride ion?
    The hydride ion has a charge of -1 (H-).
  • What type of hydride does hydrogen form when it reacts with nonmetals?
    Hydrogen forms covalent hydrides when it reacts with nonmetals.
  • What is the product when potassium reacts with hydrogen gas?
    The product is potassium hydride (KH).
  • What is the formula for barium hydride?
    The formula for barium hydride is BaH2.
  • When acting as a reducing agent, what happens to the hydride ion?
    The hydride ion donates electrons and is oxidized, making it a reducing agent.
  • How does the hydride ion act in acid-base reactions?
    The hydride ion acts as a strong base in acid-base reactions.
  • What is the reaction and significance of hydrogen gas with nitrogen gas?
    Hydrogen gas reacts with nitrogen gas to form ammonia (NH3), which is important for making fertilizer.
  • What does it mean if a reaction is highly exothermic, such as the formation of ammonia from hydrogen and nitrogen?
    A highly exothermic reaction releases a large amount of heat, making the process energetically favorable.