Question 1

Which of the following is not a mixture?

Accepted Answer

A) granite 
B) cake 
C) air 
D) beach sand 
E) None.All of the above choices are mixtures. 
A) granite 
B) cake 
C) air 
D) beach sand 
E) None.All of the above choices are mixtures.

Question 2

The weight of matter comes mostly from its

Accepted Answer

A) protons. 
B) electrons. 
C) neutrons 
A) protons. 
B) electrons. 
C) neutrons

Question 3

Which of these atoms has the greatest number of electrons?

Accepted Answer

A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium 
A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium

Question 4

Which of the following is not a compound?

Accepted Answer

A) air 
B) ammonia 
C) water 
D) salt 
E) All are compounds. 
A) air 
B) ammonia 
C) water 
D) salt 
E) All are compounds.

Question 5

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

Accepted Answer

A) hydrogen. 
B) nitrogen. 
C) both the same 
A) hydrogen. 
B) nitrogen. 
C) both the same

Question 6

An atomic mass unit (amu)is 1/12 the mass of

Accepted Answer

A) an electron. 
B) a proton. 
C) a hydrogen atom. 
D) a carbon atom. 
E) a uranium atom. 
A) an electron. 
B) a proton. 
C) a hydrogen atom. 
D) a carbon atom. 
E) a uranium atom.

Question 7

A molecule has

Accepted Answer

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

Question 8

Brownian motion has to do with the

Accepted Answer

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. 
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.

Question 9

When carbon and oxygen atoms combine,energy is

Accepted Answer

A) taken in by the reaction. 
B) given off by the reaction. 
C) not involved. 
A) taken in by the reaction. 
B) given off by the reaction. 
C) not involved.

Question 10

If we doubled the magnifying power of the most powerful optical microscope in the world,we would

Accepted Answer

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. 
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.

Question 11

How many different elements are in a water molecule?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) none 
A) one 
B) two 
C) three 
D) four 
E) none

Question 12

If an astronaut landed on a planet made of antimatter,there would be an explosion and

Accepted Answer

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. 
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.

Question 13

What makes an element distinct?

Accepted Answer

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 
B) the number of neutrons 
C) the number of electrons 
D) the total mass of all the particles 
E) none of these

Question 14

Atoms heavier than helium were made by

Accepted Answer

A) photosynthesis. 
B) thermonuclear fusion. 
C) radiant energy conversion. 
D) radioactivity. 
E) none of these 
A) photosynthesis. 
B) thermonuclear fusion. 
C) radiant energy conversion. 
D) radioactivity. 
E) none of these

Question 15

Which of these atoms has the greatest amount of electrical charge in its nucleus?

Accepted Answer

A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium 
A) helium 
B) carbon 
C) iron 
D) gold 
E) uranium

Question 16

Which of these statements is true?

Accepted Answer

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. 
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.

Question 17

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

Accepted Answer

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

Question 18

Nuclei of atoms that make up a newborn baby were made in

Accepted Answer

A) the mother's womb. 
B) the food the mother eats before giving birth. 
C) ancient stars. 
D) the Earth. 
E) none of these 
A) the mother's womb. 
B) the food the mother eats before giving birth. 
C) ancient stars. 
D) the Earth. 
E) none of these

Question 19

The smallest particle of those listed below is

Accepted Answer

A) a molecule. 
B) an atom. 
C) a proton. 
D) a neutron. 
E) a quark. 
A) a molecule. 
B) an atom. 
C) a proton. 
D) a neutron. 
E) a quark.

Question 20

How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) But protons will have to be subtracted,not added. 
A) 1 
B) 2 
C) 3 
D) 4 
E) But protons will have to be subtracted,not added.

Exam 11: Atomic Nature of Matter

Which of the following is not a mixture?

The weight of matter comes mostly from its

Which of these atoms has the greatest number of electrons?

Which of the following is not a compound?

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

An atomic mass unit (amu)is 1/12 the mass of

A molecule has

Brownian motion has to do with the

When carbon and oxygen atoms combine,energy is

If we doubled the magnifying power of the most powerful optical microscope in the world,we would

How many different elements are in a water molecule?

If an astronaut landed on a planet made of antimatter,there would be an explosion and

What makes an element distinct?

Atoms heavier than helium were made by

Which of these atoms has the greatest amount of electrical charge in its nucleus?

Which of these statements is true?

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

Nuclei of atoms that make up a newborn baby were made in

The smallest particle of those listed below is

How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when there is an electric current through it?

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

Momentum

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Solids

Liquids

Gases and Plasmas

Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Electric Current

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Emission

Light Quanta

The Atom and the Quantum

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Filters