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5 Written questions

5 Matching questions

  1. the astronaut and an equal amount of the planet would both annihilate
  2. short-lived
  3. carbon
  4. ancient stars
  5. uranium
  1. a 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.
  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 24) In our part of the universe, antimatter is
    A) non-existent.
    B) plentiful.
    C) short-lived.
    D) long-lived.
  4. d 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.
  5. e 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

5 Multiple choice questions

  1. 12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.
  2. 31) The chemical properties of matter come mostly from its
    A) protons.
    B) electrons.
    C) neutrons.
  3. 39) If two protons are added to an oxygen nucleus, the result is
    A) heavy oxygen.
    B) fluorine.
    C) neon.
    D) sodium.
    E) nitrogen.
  4. 6) If we doubled the magnifying power of the most powerful optical microscope in the world, we would
    A) be able to see individual atoms.
    B) be able to photograph individual atoms, even though we couldn't see them.
    C) still not be able to see or photograph an atom.
  5. 41) If one neutron is added to a helium nucleus, the result is
    A) hydrogen.
    B) boron.
    C) lithium.
    D) beryllium.
    E) helium.

5 True/False questions

  1. of electrical forces17) 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. a quark12) Which of the following is not a compound?
    A) air
    B) ammonia
    C) water
    D) salt
    E) All are compounds.

          

  3. 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.

          

  4. 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.

          

  5. 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

          

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