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5 Written questions

5 Matching questions

  1. the astronaut and an equal amount of the planet would both annihilate
  2. of electrical forces
  3. a carbon atom
  4. neutron
  5. still not be able to see or photograph an atom
  1. a 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
  2. b 23) 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.
  3. c 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.
  4. d 2) Which of the following are electrically neutral?
    A) proton
    B) neutron
    C) electron
    D) ion
    E) none of these
  5. e 5) An atomic mass unit (amu) is 1/12 the mass of
    A) an electron.
    B) a proton.
    C) a hydrogen atom.
    D) a carbon atom.
    E) a uranium atom.

5 Multiple choice questions

  1. 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
  2. 30) The volume of matter comes mostly from its
    A) protons.
    B) electrons.
    C) neutrons
  3. 27) 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.
  4. 11) Brownian motion has to do with the
    A) size of atoms.
    B) atomic vibrations.
    C) first direct measurement of atomic motion.
    D) random motions of atoms and molecules.
    E) rhythmic movements of atoms in a liquid.
  5. 16) A molecule has
    A) mass.
    B) structure.
    C) energy.
    D) all of these
    E) none of these

5 True/False questions

  1. the whole world3) 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. air12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.


  3. all of these39) If two protons are added to an oxygen nucleus, the result is
    A) heavy oxygen.
    B) fluorine.
    C) neon.
    D) sodium.
    E) nitrogen.


  4. the number of protons4) Atoms heavier than helium were made by
    A) photosynthesis.
    B) thermonuclear fusion.
    C) radiant energy conversion.
    D) radioactivity.
    E) none of these


  5. given off by the reaction22) When carbon and oxygen atoms combine, energy is
    A) taken in by the reaction.
    B) given off by the reaction.
    C) not involved.


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