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5 Written questions

5 Matching questions

  1. orbital electrons
  2. both the same
  3. of electrical forces
  4. lead
  5. a carbon atom
  1. a 19) Which has the greatest number of protons in its nucleus?
    A) gold.
    B) mercury.
    C) lead.
    D) silver.
  2. b 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.
  3. c 33) 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. d 14) 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
  5. e 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

5 Multiple choice questions

  1. 31) The chemical properties of matter come mostly from its
    A) protons.
    B) electrons.
    C) neutrons.
  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. 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. 12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.
  5. 20) The air in this room has
    A) mass.
    B) weight.
    C) energy.
    D) all of these
    E) none of these

5 True/False questions

  1. carbon37) If two protons are removed from an oxygen nucleus, the result is
    A) nitrogen.
    B) carbon.
    C) helium.
    D) neon.
    E) positively charged oxygen.


  2. 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.


  3. 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.


  4. uranium7) Which of these atoms has the most mass?
    A) hydrogen
    B) iron
    C) lead
    D) uranium
    E) All have the same mass.


  5. 999 grams35) 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.