Question 1

The elements in Group 7A are known by what name?

Accepted Answer

A)  Transition metals
B)  Halogens
C)  Alkali metals
D)  Alkaline earth metals
E)  Noble gasesF) A) and E)
G) A) and B)

Question 2

Which of these elements is chemically similar to oxygen?

Accepted Answer

A)  Sulfur
B)  Calcium
C)  Iron
D)  Nickel
E)  PotassiumF) D) and E)
G) B) and C)

Question 3

What is a unifying principle that explains a body of experimental observations?

Accepted Answer

A)  Law
B)  Hypothesis
C)  Theory
D)  Phenomena
E)  PredictionF) A) and E)
G) C) and E)

Question 4

Atoms of the same element with different mass numbers are called

Accepted Answer

A)  ions.
B)  neutrons.
C)  chemical groups.
D)  chemical families.
E)  isotopes.F) A) and B)
G) A) and C)

Question 5

Which isotope is not possible?

Accepted Answer

A)   
B)   
C)   
D)   
E)  All of these isotopes are possible.F) B) and D)
G) A) and E)

Question 6

Which of the following is a metalloid?

Accepted Answer

A)  Carbon, C, Z = 6
B)  Sulfur, S, Z = 16
C)  Germanium, Ge, Z = 32
D)  Iridium, Ir, Z = 77
E)  Bromine, Br, Z = 35F) A) and B)
G) A) and C)

Question 7

Give the number of protons (p) , electrons (e) , and neutrons (n)  in one atom of chlorine-37.

Accepted Answer

A)  37 p, 37 e, 17 n
B)  17 p, 17 e, 37 n
C)  17 p, 17 e, 20 n
D)  37 p, 17 e, 20 n
E)  17 p, 37 e, 17 nF) A) and B)
G) C) and D)

Question 8

How many neutrons are there in an atom of lead whose mass number is 208?

Accepted Answer

A)  82
B)  126
C)  208
D)  290
E)  none of themF) A) and B)
G) B) and E) B

Question 9

Which of these elements exhibits chemical behavior similar to that of silver?

Accepted Answer

A)  nickel
B)  gold
C)  sulfur
D)  chlorine
E)  ironF) D) and E)
G) C) and D)

Question 10

Who is credited with discovering the atomic nucleus?

Accepted Answer

A)  Dalton
B)  Gay-Lussac
C)  Thomson
D)  Chadwick
E)  RutherfordF) A) and B)
G) A) and E)

Question 11

Determine the number of protons and identify the correct symbol for an atom with 20 neutrons and 20 electrons.

Accepted Answer

A)  20 protons,  " class="answers-bank-image d-inline" rel="preload" >
B)  20 protons,  " class="answers-bank-image d-inline" rel="preload" >
C)  20 protons,  " class="answers-bank-image d-inline" rel="preload" >
D)  40 protons,  " class="answers-bank-image d-inline" rel="preload" >
E)  40 protons,  " class="answers-bank-image d-inline" rel="preload" >  F) C) and D)
G) A) and E) B

Question 12

What is the term for the number of protons in the nucleus of each atom of an element? It also indicates the number of electrons in the atom.

Accepted Answer

A)  Isotope number
B)  Mass number
C)  Mass-to-charge ratio
D)  Atomic number
E)  Atomic mass unitsF) B) and D)
G) A) and B)

Question 13

Which element would be expected to have properties similar to argon?

Accepted Answer

A)  F
B)  Cl
C)  H
D)  Br
E)  KrF) A) and C)
G) A) and B)

Question 14

Lead (Pb) is a main group element.

Accepted Answer

A) True 
 B)False

Question 15

Which element would be expected to have properties similar to antimony?

Accepted Answer

A)  Se
B)  Sn
C)  P
D)  As
E)  PbF) A) and E)
G) C) and D)

Question 16

Which of these elements is chemically similar to potassium?

Accepted Answer

A)  calcium
B)  arsenic
C)  phosphorus
D)  cerium
E)  cesiumF) B) and E)
G) A) and D)

Question 17

Which one of these elements is a transition element?

Accepted Answer

A)  Sr
B)  Pb
C)  As
D)  Fe
E)  HF) None of the above
G) B) and E)

Question 18

Copper (Cu) is a transition metal.

Accepted Answer

A) True 
 B)False  True

Question 19

In what groups are transition metals located?

Accepted Answer

A)  1A, 7A, and 1B
B)  2A, 4A, and 7A
C)  1B through 8B
D)  2B and 3B through 6B
E)  3A through 6AF) A) and D)
G) C) and D)

Question 20

Rutherford's experiment with alpha particle scattering by gold foil established that

Accepted Answer

A)  protons are not evenly distributed throughout an atom.
B)  electrons have a negative charge.
C)  electrons have a positive charge.
D)  atoms are made of protons, neutrons, and electrons.
E)  protons are 1840 times heavier than electrons.F) None of the above
G) B) and C)

Exam 1: Atoms and Elements

The elements in Group 7A are known by what name?

Correct AnswerverifiedShow Answer

Which of these elements is chemically similar to oxygen?

Correct AnswerverifiedShow Answer

What is a unifying principle that explains a body of experimental observations?

Correct AnswerverifiedShow Answer

Atoms of the same element with different mass numbers are called

Correct AnswerverifiedShow Answer

Which isotope is not possible?

Correct AnswerverifiedShow Answer

Which of the following is a metalloid?

Correct AnswerverifiedShow Answer

Give the number of protons (p) , electrons (e) , and neutrons (n) in one atom of chlorine-37.

Correct AnswerverifiedShow Answer

How many neutrons are there in an atom of lead whose mass number is 208?

Correct AnswerverifiedB

Which of these elements exhibits chemical behavior similar to that of silver?

Correct AnswerverifiedShow Answer

Who is credited with discovering the atomic nucleus?

Correct AnswerverifiedShow Answer

Determine the number of protons and identify the correct symbol for an atom with 20 neutrons and 20 electrons.

Correct AnswerverifiedB

What is the term for the number of protons in the nucleus of each atom of an element? It also indicates the number of electrons in the atom.

Correct AnswerverifiedShow Answer

Which element would be expected to have properties similar to argon?

Correct AnswerverifiedShow Answer

Lead (Pb) is a main group element.

Correct AnswerverifiedShow Answer

Which element would be expected to have properties similar to antimony?

Correct AnswerverifiedShow Answer

Which of these elements is chemically similar to potassium?

Correct AnswerverifiedShow Answer

Which one of these elements is a transition element?

Correct AnswerverifiedShow Answer

Copper (Cu) is a transition metal.

Correct AnswerverifiedTrue

In what groups are transition metals located?

Correct AnswerverifiedShow Answer

Rutherford's experiment with alpha particle scattering by gold foil established that

Correct AnswerverifiedShow Answer

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B

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B

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True

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