Chapter 11: Atomic Nature Of Matter
- 1.How many different elements are in a water molecule?
- A.
1
- B.
2
- C.
3
- D.
4
- E.
None
- 2.Which of the following are electrically neutral?
- A.
Proton
- B.
Neutron
- C.
Electron
- D.
Ion
- E.
None of these
- 3.There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of
- A.
A large auditorium.
- B.
A large city.
- C.
The United States.
- D.
The whole world.
- E.
None of these
- 4.Atoms heavier than helium were made by
- A.
Photosynthesis.
- B.
Thermonuclear fusion.
- C.
Radiant energy conversion.
- D.
Radioactivity.
- E.
None of these
- 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.
- 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.
- 7.Which of these atoms has the most mass?
- A.
Hydrogen
- B.
Iron
- C.
Lead
- D.
Uranium
- E.
All have the same mass.
- 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.
- 9.Which of the following statements is true?
- A.
An atom is the smallest particle known to exist.
- B.
There are only about 100 different kinds of atoms that combine to form all substances.
- C.
There are thousands of different kinds of atoms that account for a wide variety of substances.
- D.
A large atom can be photographed with the aid of an ordinary microscope.
- E.
None of these statements are true.
- 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
- 11.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.
- 12.Which of the following is not a compound?
- A.
Air
- B.
Ammonia
- C.
Water
- D.
Salt
- E.
All are compounds.
- 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.
- 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
- 15.The smallest particle of those listed below is
- A.
A molecule.
- B.
An atom.
- C.
A proton.
- D.
A neutron.
- E.
A quark.
- 16.A molecule has
- A.
Mass.
- B.
Structure.
- C.
Energy.
- D.
All of these
- E.
None of these
- 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
- 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
- 19.Which has the greatest number of protons in its nucleus?
- A.
Gold
- B.
Mercury
- C.
Lead
- D.
Silver
- 20.The air in this room has
- A.
Mass
- B.
Weight
- C.
Energy
- D.
All of these
- E.
None of these
- 21.Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy given off when they recombine is
- A.
Slightly more.
- B.
Slightly less.
- C.
Much more.
- D.
Much less.
- E.
The same.
- 22.When carbon and oxygen atoms combine, energy is
- A.
Taken in by the reaction.
- B.
Given off by the reaction.
- C.
Not involved.
- 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.
- 24.In our part of the universe, antimatter is
- A.
Non-existent.
- B.
Plentiful.
- C.
Short-lived.
- D.
Long-lived.
- 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.
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