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5 Written questions

5 Matching questions

  1. electrical force
  2. ancient stars
  3. 999 grams
  4. both the same
  5. anti-hydrogen
  1. a 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.
  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 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 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
  5. e 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

5 Multiple choice questions

  1. 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
  2. 24) In our part of the universe, antimatter is
    A) non-existent.
    B) plentiful.
    C) short-lived.
    D) long-lived.
  3. 44) Which of these atoms has the greatest number of electrons?
    A) helium
    B) carbon
    C) iron
    D) gold
    E) uranium
  4. 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
  5. 2) Which of the following are electrically neutral?
    A) proton
    B) neutron
    C) electron
    D) ion
    E) none of these

5 True/False questions

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


  2. random motions of atoms and molecules11) 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. the astronaut and an equal amount of the planet would both annihilate23) 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.


  4. helium41) If one neutron is added to a helium nucleus, the result is
    A) hydrogen.
    B) boron.
    C) lithium.
    D) beryllium.
    E) helium.


  5. electrons30) The volume of matter comes mostly from its
    A) protons.
    B) electrons.
    C) neutrons