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5 Written questions

5 Matching questions

  1. electrical force
  2. ancient stars
  3. the astronaut and an equal amount of the planet would both annihilate
  4. two
  5. short-lived
  1. a 24) In our part of the universe, antimatter is
    A) non-existent.
    B) plentiful.
    C) short-lived.
    D) long-lived.
  2. b 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
  3. c 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
  4. d 1) How many different elements are in a water molecule?
    A) one
    B) two
    C) three
    D) four
    E) none
  5. e 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.

5 Multiple choice questions

  1. 8) Which of these statements is true?
    A) A molecule is the smallest particle that exists.
    B) Chemical elements are made up of about 100 distinct molecules.
    C) Molecules form atoms that in turn determine chemical properties of a substance.
    D) Molecules are the smallest subdivision of matter that still retains chemical properties of a substance.
    E) None of these statements is true.
  2. 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.
  3. 43) Which of these atoms has the greatest amount of electrical charge in its nucleus?
    A) helium
    B) carbon
    C) iron
    D) gold
    E) uranium
  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. 12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.

5 True/False questions

  1. thermonuclear fusion10) 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. There are only about 100 different kinds of atoms that combine to form all substances11) 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.

          

  3. all of these16) A molecule has
    A) mass.
    B) structure.
    C) energy.
    D) all of these
    E) none of these

          

  4. the whole world27) 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.

          

  5. 242) How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?
    A) 1
    B) 2
    C) 3
    D) 4
    E) But protons will have to be subtracted, not added.