Atomic Nature of Matter - Solved Quiz - Basic Concepts of Physics, Exercises of Physics

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Atoms heavier than hydrogen were made byA) photosynthesisB) nuclear fusionC) radiant energy conversionD) RadioactivityE) None of these

Atoms heavier than hydrogen were made byA) photosynthesisB) nuclear fusionC) radiant energy conversionD) RadioactivityE) None of these

Answer: BAll nuclei larger than H were made by nuclear fusion inthe stars long ago…

The continual increase in the world’s population meansA) the average atomic mass of each element in the periodic table iscontinually decreasing to compensate the increase in the number of atomsB) the mass of the earth and its inhabitants is increasingC) the mass of non-human stuff on earth must be decreasingD) none of the above

C)Atoms are continually recycled; the total mass of earth, atmosphere,and everything on it, remains the same. The increase in the numberand mass of atoms making up humans means a decrease in thenumber of atoms making up everything else.

Which of the following statements is true?A) An atom is the smallest particle known to exist.B) There are only about 120 different kinds of atoms that

combine to form many 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.E) None of these statements are true.

A force that determines the chemical properties of an atom is a

A) friction force.B) nuclear force. C) electrical force. D) gravitational force.

E) none of these

A force that determines the chemical properties of an atom is a

A) friction force.B) nuclear force. C) electrical force. D) gravitational force.

E) none of these

Answer: C)…from lecture…chemical properties includethings like what molecules it will form, what color it is, whattaste it has…

If one neutron is added to a helium nucleus, the result is

A) beryllium.B) boron.C) hydrogen.D) lithium.E) helium

Answer: E, helium – an isotope.But if instead, a proton was added, then what would theanswer be?Then D, lithium.

To change platinum into gold, a proton must beA) removed from the platinum nucleusB) added to the platinum nucleusC) removed from the gold nucleusD) added to the gold nucleusE) none of the above

Which of these atoms has the greatest number of

protons? A) heliumB) oxygenC)leadD)uraniumE) gold

Which of these atoms has the greatest number of

protons? A) heliumB) oxygenC)leadD)uraniumE) goldAnswer: D, from periodic table – U has the largest atomicnumber and atomic number = # protons (= # electrons inneutral atom)Which has the greatest mass?Also D.

If a gram of antimatter meets a kilogram of matter, the

amount of mass to survive is A) 1 gramB) 999 gramsC)1 kilogramD)1.1 kilogram Answer: BAntimatter and matter annihilate each other, so the 1gramof antimatter annihiliates 1gram of matter, leaving 999grams of matter.This is why antimatter is so short-lived in our part of theuniverse.

Everybody knows that “water seeks its ownlevel,” but very few people know why waterseeks its own level. The reason has most to dowith 1. atmospheric pressure.2. water pressure depending on depth.3. water’s density.

Water pressure is greatest against the

A) top of a submerged object. B) bottom of a submerged object.C) sides of a submerged object.D) is the same against all surfaces

E) none of these

Water pressure is greatest against the

A) top of a submerged object. B) bottom of a submerged object.C) sides of a submerged object.D) is the same against all surfaces

E) none of these

Answer: BFrom liquid pressure = density x depth.This is

why

the buoyant force acts

upward

on a submerged

object.