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5 Written questions

5 Matching questions

  1. beryllium
  2. all of these
  3. ancient stars
  4. single breath
  5. two
  1. a 40) If a pair of helium nuclei are fused together, the result is
    A) helium isotope.
    B) lithium.
    C) beryllium.
    D) boron.
    E) carbon.
  2. b 1) How many different elements are in a water molecule?
    A) one
    B) two
    C) three
    D) four
    E) none
  3. c 16) A molecule has
    A) mass.
    B) structure.
    C) energy.
    D) all of these
    E) none of these
  4. d 26) Nuclei of atoms that make up a newborn baby were made in
    A) the mother's womb.
    B) the food the mother eats before giving birth.
    C) ancient stars.
    D) the Earth.
    E) none of these
  5. e 25) Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, then we probably breathe one of those atoms with each
    A) single breath.
    B) day.
    C) month.
    D) ten years.
    E) It depends - some people still breathe a few of Caesar's atoms every day, while others wouldn't breathe one for an entire year.

5 Multiple choice questions

  1. 3) There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of
    A) a large auditorium.
    B) a large city.
    C) the United States.
    D) the whole world.
    E) none of these
  2. 21) Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy given off when they recombine is
    A) slightly more.
    B) slightly less.
    C) much more.
    D) much less.
    E) the same.
  3. 10) What makes an element distinct?
    A) the number of protons
    B) the number of neutrons
    C) the number of electrons
    D) the total mass of all the particles
    E) none of these
  4. 6) If we doubled the magnifying power of the most powerful optical microscope in the world, we would
    A) be able to see individual atoms.
    B) be able to photograph individual atoms, even though we couldn't see them.
    C) still not be able to see or photograph an atom.
  5. 17) Solid matter is mostly empty space. The reason solids don't fall through one another is because
    A) atoms are constantly vibrating, even at absolute zero.
    B) of nuclear forces.
    C) of gravitational forces.
    D) of electrical forces.
    E) none of these

5 True/False questions

  1. mostly empty space themselves27) Compared to the atoms that make up the body of an elderly person, the atoms that make up the body of a newborn baby are
    A) newer.
    B) actually older.
    C) the same age.

          

  2. both the same21) Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy given off when they recombine is
    A) slightly more.
    B) slightly less.
    C) much more.
    D) much less.
    E) the same.

          

  3. a carbon atom37) If two protons are removed from an oxygen nucleus, the result is
    A) nitrogen.
    B) carbon.
    C) helium.
    D) neon.
    E) positively charged oxygen.

          

  4. uranium44) Which of these atoms has the greatest number of electrons?
    A) helium
    B) carbon
    C) iron
    D) gold
    E) uranium

          

  5. the astronaut and an equal amount of the planet would both annihilate23) If an astronaut landed on a planet made of antimatter, there would be an explosion and
    A) the planet would annihilate.
    B) an amount of planet matter equal to that of the astronaut would annihilate.
    C) the astronaut would annihilate.
    D) the astronaut and an equal amount of the planet would both annihilate.

          

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