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5 Written questions

5 Matching questions

  1. beryllium
  2. all of these
  3. mostly empty space themselves
  4. None of the above is true
  5. 16 times as great
  1. a 28) The reason a granite block is mostly empty space is that the atoms in the granite are
    A) in perpetual motion.
    B) mostly empty space themselves.
    C) held together by electrical forces.
    D) not as close together as they could be.
    E) invisible.
  2. b 16) A molecule has
    A) mass.
    B) structure.
    C) energy.
    D) all of these
    E) none of these
  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 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. e 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 Multiple choice questions

  1. 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
  2. 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
  3. 37) 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. 13) Which of the following is not a mixture?
    A) granite
    B) cake
    C) air
    D) beach sand
    E) None. All of the above choices are mixtures.
  5. 30) The volume of matter comes mostly from its
    A) protons.
    B) electrons.
    C) neutrons

5 True/False questions

  1. neutron2) Which of the following are electrically neutral?
    A) proton
    B) neutron
    C) electron
    D) ion
    E) none of these

          

  2. short-lived40) If a pair of helium nuclei are fused together, the result is
    A) helium isotope.
    B) lithium.
    C) beryllium.
    D) boron.
    E) carbon.

          

  3. 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

          

  4. a quark12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.

          

  5. still not be able to see or photograph an atom10) 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

          

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