Question 1

Which of the following is a type of radioactive radiation that consists of electrons and is deflected away from the negatively charged plate?

Accepted Answer

A)   α rays
B)   β rays
C)   γ rays
D)   δ rays
E)   ε raysF) D) and E)
G) All of the above

Question 2

Which is the correct formula for copper(II)  phosphate?

Accepted Answer

A)   Cu2PO4
B)   Cu3(PO4) 2
C)   Cu2PO3
D)   Cu(PO4) 2
E)   Cu(PO3) 2F) B) and E)
G) All of the above

Question 3

________ is defined as a mass exactly equal to one-twelfth the mass of one carbon-12 atom.

Accepted Answer

One atomic mass unit
1 amu
1 a...

Question 4

Which of the following is the empirical formula for hexane, C6H14?

Accepted Answer

A)   C12H28
B)   C6H14
C)   C3H7
D)   CH2.3
E)   C0.43HF) A) and E)
G) A) and B)

Question 5

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 6

Polyatomic molecules contain

Accepted Answer

A)   two different types of atoms.
B)   two of the same types of atoms.
C)   only two atoms of the same or different type.
D)   more than two atoms of the same or different type.E) All of the above
F) A) and B)

Question 7

Who is credited with discovering the atomic nucleus?

Accepted Answer

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

Question 8

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) A) and B)
G) B) and D)

Question 9

Common examples of diatomic molecules from Group 7A elements include

Accepted Answer

A)   fluorine, hydrogen, and nitrogen.
B)   nitrogen, chlorine, and bromine.
C)   chlorine, bromine, and iodine.
D)   iodine, lead, and oxygen.E) A) and B)
F) All of the above

Question 10

Determine the number of protons, electrons, and neutrons for the isotope gold-118. The symbol for gold is Au.

Accepted Answer

A)   118 protons, 118 electrons, 79 neutrons
B)   79 protons, 79 electrons, 118 neutrons
C)   79 protons, 79 electrons, 39 neutrons
D)   118 protons, 118 electrons, 39 neutrons
E)   79 protons, 39 electrons, 118 neutronsF) B) and C)
G) A) and E)

Question 11

Which isotope is not possible?

Accepted Answer

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

Question 12

What is the formula of hydrobromic acid?

Accepted Answer

A)   H2OBr
B)   HBrO3
C)   HBrO
D)   HBr
E)   HBr·2H2OF) B) and C)
G) C) and D)

Question 13

Describe the difference between an empirical formula and a molecular formula.

Accepted Answer

An empirical formula is the simplest che...

Question 14

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

Accepted Answer

A)   15 p, 16 n, 15 e
B)   16 p, 15 n, 16 e
C)   16 p, 31 n, 16 e
D)   32 p, 31 n, 32 e
E)   16 p, 16 n, 15 eF) B) and D)
G) A) and B)

Question 15

All neutral atoms of tin have 50 protons and 50 electrons.

Accepted Answer

A) True 
 B)False

Question 16

The chemical formula for iron(II)  nitrate is

Accepted Answer

A)   Fe2(NO3) 3.
B)   Ir(NO2) 2.
C)   Fe2N3.
D)   Fe(NO3) 2.
E)   Fe(NO2) 2.F) B) and D)
G) C) and D)

Question 17

The elements in Group 1A are called the ________.

Accepted Answer

The answer of The elements in Group 1A are called...

Question 18

________ are electrons that are deflected away from negatively charged plates.

Accepted Answer

The answer of ________ are electrons that are deflected away...

Question 19

Which of these elements is chemically similar to potassium?

Accepted Answer

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

Question 20

Select the correct 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) A) and E)

Exam 2: Atoms, Molecules, and Ions

Which isotope is not possible?

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The elements in Group 1A are called the ________.

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Which of these elements is chemically similar to potassium?

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Common examples of diatomic molecules from Group 7A elements include

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Who is credited with discovering the atomic nucleus?

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Which of the following is the empirical formula for hexane, C6H14?

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Which of the following is a type of radioactive radiation that consists of electrons and is deflected away from the negatively charged plate?

Correct AnswerverifiedShow Answer

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.

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

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Polyatomic molecules contain

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________ are electrons that are deflected away from negatively charged plates.

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What is the formula of hydrobromic acid?

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The chemical formula for iron(II) nitrate is

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Which is the correct formula for copper(II) phosphate?

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Describe the difference between an empirical formula and a molecular formula.

Correct AnswerverifiedAn empirical formula is the simplest che...View AnswerShow Answer

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

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All neutral atoms of tin have 50 protons and 50 electrons.

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________ is defined as a mass exactly equal to one-twelfth the mass of one carbon-12 atom.

Correct AnswerverifiedOne atomic mass unit1 amu1 a...View AnswerShow Answer

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

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Determine the number of protons, electrons, and neutrons for the isotope gold-118. The symbol for gold is Au.

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Which of the following is the empirical formula for hexane, C₆H₁₄?

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An empirical formula is the simplest che...
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One atomic mass unit
1 amu
1 a...
View Answer

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