Chapter 11 (Atomic Nature of Matter) Test Review

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

A) air

The weight of matter comes mostly from its A) protons. B) electrons. C) neutrons

A) protons.

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

A) the number of protons

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.

B) 999 grams.

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

B) carbon.

The chemical properties of matter come mostly from its A) protons. B) electrons. C) neutrons.

B) electrons.

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.

A) single breath.

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.

B) There are only about 100 different kinds of atoms that combine to form all substances.

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

B) electrons.

When carbon and oxygen atoms combine, energy is A) taken in by the reaction. B) given off by the reaction. C) not involved.

B) given off by the reaction.

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

B) neutron

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.

C) 16 times as great.

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

C) ancient stars.

If a pair of helium nuclei are fused together, the result is A) helium isotope. B) lithium. C) beryllium. D) boron. E) carbon.

C) beryllium.

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

C) lead.

If two protons are added to an oxygen nucleus, the result is A) heavy oxygen. B) fluorine. C) neon. D) nitrogen

C) neon.

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

C) orbital electrons.

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.

C) still not be able to see or photograph an atom.

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.

C) the same age.

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.

D) 18 amu

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.

D) a carbon atom.

A molecule has A) mass. B) structure. C) energy. D) all of these E) none of these

D) all of these

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

D) anti-hydrogen.

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) Brownian motion has to do with the

D) random motions of atoms and molecules.

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.

D) the astronaut and an equal amount of the planet would both annihilate.

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

D) the whole world.

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

D) uranium

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.

E) None of the above is true.

The smallest particle of those listed below is A) a molecule. B) an atom. C) a proton. D) a neutron. E) a quark.

E) a quark.

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

E) helium.

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.

E) the same.

Which of these atoms has the greatest amount of electrical charge in its nucleus? A) helium B) carbon C) iron D) gold E) uranium

E) uranium

Which of these atoms has the greatest number of electrons? A) helium B) carbon C) iron D) gold E) uranium

E) uranium