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5 Written questions

5 Matching questions

  1. given off by the reaction
  2. electrical force
  3. thermonuclear fusion
  4. 999 grams
  5. of electrical forces
  1. a 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
  2. b 22) When carbon and oxygen atoms combine, energy is
    A) taken in by the reaction.
    B) given off by the reaction.
    C) not involved.
  3. c 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
  4. d 4) Atoms heavier than helium were made by
    A) photosynthesis.
    B) thermonuclear fusion.
    C) radiant energy conversion.
    D) radioactivity.
    E) none of these
  5. e 35) If a gram of antimatter meets a kilogram of matter, the amount of mass to survive is
    A) 1 gram.
    B) 999 grams.
    C) 1 kilogram.
    D) 1.1 kilogram.

5 Multiple choice questions

  1. 34) A positron orbiting an antiproton would make up an atom of
    A) positronium.
    B) unobtainium.
    C) anti-helium.
    D) anti-hydrogen.
    E) none of these
  2. 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.
  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. 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.
  5. 1) How many different elements are in a water molecule?
    A) one
    B) two
    C) three
    D) four
    E) none

5 True/False questions

  1. orbital electrons14) In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
    A) neutrons.
    B) quarks.
    C) orbital electrons.
    D) all of these
    E) none of these


  2. single breath25) 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.


  3. lead19) Which has the greatest number of protons in its nucleus?
    A) gold.
    B) mercury.
    C) lead.
    D) silver.


  4. None. All of the above choices are mixtures.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. Molecules are the smallest subdivision of matter that still retains chemical properties of a substance9) Which of the following statements is true?
    A) An atom is the smallest particle known to exist.
    B) There are only about 100 different kinds of atoms that combine to form all substances.
    C) There are thousands of different kinds of atoms that account for a wide variety of substances.
    D) A large atom can be photographed with the aid of an ordinary microscope.
    E) None of these statements are true.


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