Question types

Start with

Question limit

of 44 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. ancient stars
  2. single breath
  3. two
  4. anti-hydrogen
  5. the same age
  1. a 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.
  2. b 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. c 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
  4. d 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.
  5. e 1) How many different elements are in a water molecule?
    A) one
    B) two
    C) three
    D) four
    E) none

5 Multiple choice questions

  1. 22) When carbon and oxygen atoms combine, energy is
    A) taken in by the reaction.
    B) given off by the reaction.
    C) not involved.
  2. 36) What is the molecular mass of a water molecule?
    A) 10 amu
    B) 12 amu
    C) 15 amu
    D) 18 amu
    E) None of these. It depends on the temperature.
  3. 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.
  4. 40) If a pair of helium nuclei are fused together, the result is
    A) helium isotope.
    B) lithium.
    C) beryllium.
    D) boron.
    E) carbon.
  5. 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 True/False questions

  1. 16 times as great32) 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.


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


  3. 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


  4. fluorine2) Which of the following are electrically neutral?
    A) proton
    B) neutron
    C) electron
    D) ion
    E) none of these


  5. None of the above is true38) 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.