Question 1

How many neutrons are present in C-14?

Accepted Answer

A)  14
B)  12
C)  6
D)  8
E)  none of the above

Question 2

Mg is a member of which family?

Accepted Answer

A)  noble gases
B)  halogens
C)  alkaline earth metals
D)  alkali metals
E)  none of the above

Question 3

Identify the element that is a nonmetal,a gas,and has an elemental symbol that starts with the letter "A."

Accepted Answer

A)  Ac
B)  Ar
C)  Au
D)  Al
E)  none of the above

Question 4

Protons and electrons each have a mass of 1 amu.

Accepted Answer

A) True 
 B)False

Question 5

What is the charge on the barium ion?

Accepted Answer

A)  1-
B)  2-
C)  1+
D)  2+
E)  none of the above

Question 6

An atom is the smallest identifiable unit of a compound.

Accepted Answer

A) True 
 B)False

Question 7

Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?

Accepted Answer

A)  Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
B)  Electrical charge is a fundamental property of protons and electrons in which like charges repel and opposite charges attract.
C)  Most of the volume of the atom is empty space occupied by tiny,negatively charged electrons.
D)  There are as many electrons outside the nucleus as there are protons inside the nucleus in a neutral atom.
E)  All of the above statements are consistent.

Question 8

All carbon atoms have exactly 6 protons.

Accepted Answer

A) True 
 B)False

Question 9

What is the charge on the cesium ion?

Accepted Answer

A)  1-
B)  2-
C)  1+
D)  2+
E)  none of the above

Question 10

Metals are located where on the periodic table?

Accepted Answer

A)  left side
B)  right side
C)  middle
D)  zig-zag diagonal line
E)  none of the above

Question 11

Which of the following is NOT a correct name,symbol combination?

Accepted Answer

A)  beryllium,Be
B)  magnesium,Mg
C)  iron,I
D)  manganese,Mn
E)  silicon,Si

Question 12

Which of the following elements has an atomic number of 4?

Accepted Answer

A)  H
B)  C
C)  He
D)  Be
E)  none of the above

Question 13

When an atom gains an electron,the resulting particle is called

Accepted Answer

A)  a proton.
B)  an anion.
C)  a cation.
D)  an isotope.
E)  none of the above

Question 14

An element is discovered that is a solid,has one valence electron,and readily forms a 1+ ion.This element would be correctly classified as a nonmetal.

Accepted Answer

A) True 
 B)False

Question 15

What is the charge on a lithium atom that contains 2 e-?

Accepted Answer

A)  2+
B)  3+
C)  1-
D)  1+
E)  none of the above

Question 16

Which of the following subatomic particles has a mass of 1.67 × 10-27 kg?

Accepted Answer

A)  electrons only
B)  protons only
C)  neutrons only
D)  protons and neutrons
E)  none of the above

Question 17

The atomic mass of individual atoms of an element may vary.

Accepted Answer

A) True 
 B)False

Question 18

An atom of a carbon-14 isotope would contain

Accepted Answer

A)  6 protons,8 neutrons,and 6 electrons.
B)  8 protons,6 neutrons,and 8 electrons.
C)  6 protons,8 neutrons,and 8 electrons.
D)  14 protons,6 neutrons,and 6 electrons.
E)  20 protons,6 neutrons,and 20 electrons.

Question 19

What is the atomic symbol for tin?

Accepted Answer

A)  Sn
B)  Ti
C)  Tn
D)  Si
E)  none of the above

Question 20

Nonmetals are located where on the periodic table?

Accepted Answer

A)  left side
B)  right side
C)  middle
D)  zig-zag diagonal line
E)  none of the above

Exam 4: Atoms and Elements

Mg is a member of which family?

Correct AnswerverifiedShow Answer

Metals are located where on the periodic table?

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Protons and electrons each have a mass of 1 amu.

Correct AnswerverifiedShow Answer

An element is discovered that is a solid,has one valence electron,and readily forms a 1+ ion.This element would be correctly classified as a nonmetal.

Correct AnswerverifiedShow Answer

What is the atomic symbol for tin?

Correct AnswerverifiedShow Answer

All carbon atoms have exactly 6 protons.

Correct AnswerverifiedShow Answer

Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?

Correct AnswerverifiedShow Answer

An atom of a carbon-14 isotope would contain

Correct AnswerverifiedShow Answer

Which of the following is NOT a correct name,symbol combination?

Correct AnswerverifiedShow Answer

The atomic mass of individual atoms of an element may vary.

Correct AnswerverifiedShow Answer

What is the charge on the barium ion?

Correct AnswerverifiedShow Answer

An atom is the smallest identifiable unit of a compound.

Correct AnswerverifiedShow Answer

Nonmetals are located where on the periodic table?

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Identify the element that is a nonmetal,a gas,and has an elemental symbol that starts with the letter "A."

Correct AnswerverifiedShow Answer

What is the charge on the cesium ion?

Correct AnswerverifiedShow Answer

Which of the following subatomic particles has a mass of 1.67 × 10-27 kg?

Correct AnswerverifiedShow Answer

How many neutrons are present in C-14?

Correct AnswerverifiedShow Answer

What is the charge on a lithium atom that contains 2 e-?

Correct AnswerverifiedShow Answer

When an atom gains an electron,the resulting particle is called

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Which of the following elements has an atomic number of 4?

Correct AnswerverifiedShow Answer

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Which of the following subatomic particles has a mass of 1.67 × 10^-²⁷ kg?

Correct Answer
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What is the charge on a lithium atom that contains 2 e^-?

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