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5 Written Questions

5 Matching Questions

  1. still not be able to see or photograph an atom
  2. a carbon atom
  3. the same age
  4. None of the above is true
  5. beryllium
  1. a 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.
  2. b 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.
  3. c 40) If a pair of helium nuclei are fused together, the result is
    A) helium isotope.
    B) lithium.
    C) beryllium.
    D) boron.
    E) carbon.
  4. d 38) To change mercury into gold, a pair of protons must be
    A) removed from the mercury nucleus.
    B) added to the mercury nucleus.
    C) removed from the gold nucleus
    D) added to the gold nucleus.
    E) None of the above is true.
  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. 29) The weight of matter comes mostly from its
    A) protons.
    B) electrons.
    C) neutrons
  2. 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
  3. 18) A force that determines the chemical properties of an atom is a(n)
    A) friction force.
    B) nuclear force.
    C) gravitational force.
    D) electrical force.
    E) none of these
  4. 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.
  5. 32) Compared to the mass of a hydrogen atom, the mass of an oxygen atom is
    A) 8 times as great.
    B) 12 times as great.
    C) 16 times as great.
    D) appreciably more than 16 times as great.

5 True/False Questions

  1. all of these20) The air in this room has
    A) mass.
    B) weight.
    C) energy.
    D) all of these
    E) none of these

          

  2. a quark15) The smallest particle of those listed below is
    A) a molecule.
    B) an atom.
    C) a proton.
    D) a neutron.
    E) a quark.

          

  3. both the same33) In a closed bottle are a certain number of hydrogen molecules. In an identical closed bottle at the same temperature and internal pressure are a certain number of nitrogen molecules. The bottle with the greater number of molecules is the one containing
    A) hydrogen.
    B) nitrogen.
    C) both the same

          

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

          

  5. given off by the reaction20) The air in this room has
    A) mass.
    B) weight.
    C) energy.
    D) all of these
    E) none of these

          

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