Question 1

Cations are particles with fewer electrons than protons.

Accepted Answer

A) True 
 B)False  True

Question 2

The molecular formula for dinitrogen pentoxide is _____.

Accepted Answer

A) N2O5 
B) (NO5)2 
C) 2NO5 
D) N2P5O 
A) N2O5 
B) (NO5)2 
C) 2NO5 
D) N2P5O A

Question 3

Consider 235U. How many neutrons are present in this nuclide?

Accepted Answer

A) 143 
B) 235 
C) 92 
D) 177 
A) 143 
B) 235 
C) 92 
D) 177 A

Question 4

The systematic (IUPAC)name of MgI2is _____.

Accepted Answer

A) manganese iodide 
B) manganese diiodide 
C) magnesium iodide 
D) magnesium (II)iodide 
A) manganese iodide 
B) manganese diiodide 
C) magnesium iodide 
D) magnesium (II)iodide

Question 5

The molecular formula for strontium chloride is _____.

Accepted Answer

A) SrCl2 
B) StCl2 
C) SrClO2 
D) SrCl 
A) SrCl2 
B) StCl2 
C) SrClO2 
D) SrCl

Question 6

CaCl2is an example of a(n)_____.

Accepted Answer

A) covalent compound 
B) formula unit 
C) molecular compound 
D) organic acid 
A) covalent compound 
B) formula unit 
C) molecular compound 
D) organic acid

Question 7

In the modern periodic table, the densest element is found in  _____.

Accepted Answer

A) period 2 
B) period 4 
C) period 6 
D) period 8 
A) period 2 
B) period 4 
C) period 6 
D) period 8

Question 8

The molecular formula for calcium phosphate is _____.

Accepted Answer

A) Ca3P2 
B) CaPO3 
C) Ca3(PO4)2 
D) Ca2(PO4)3 
A) Ca3P2 
B) CaPO3 
C) Ca3(PO4)2 
D) Ca2(PO4)3

Question 9

The systematic name of V2O5is vanadium pentoxide.

Accepted Answer

A) True 
 B)False

Question 10

The vertical columns in the periodic table are called _____.

Accepted Answer

A) groups 
B) periods 
C) classes 
D) sections 
A) groups 
B) periods 
C) classes 
D) sections

Question 11

Which of the following is a metalloid?

Accepted Answer

A) Boron 
B) Lithium 
C) Uranium 
D) Tungsten 
A) Boron 
B) Lithium 
C) Uranium 
D) Tungsten

Question 12

How many electrons are present in 40Ca2+?

Accepted Answer

A) 40 
B) 38 
C) 20 
D) 18 
A) 40 
B) 38 
C) 20 
D) 18

Question 13

Potassium has two stable isotopes:  39 K, which has a mass of 38.96 amu and makes up 93.26 % of the natural potassium found; and  41 K, with a mass of 40.96 amu. What is the atomic weight of potassium?

Accepted Answer

Question 14

_____ are examples of actinides.

Accepted Answer

A) Ti and Cr 
B) U and Np 
C) Sm and Er 
D) Kr and Xe 
A) Ti and Cr 
B) U and Np 
C) Sm and Er 
D) Kr and Xe

Question 15

Elements in a periodic family tend to combine with the same number of hydrogen atoms.

Accepted Answer

A) True 
 B)False

Question 16

The molecular formula for iron(II)bromide is _____.

Accepted Answer

A) FeBr3 
B) FeBr2 
C) I2Br2 
D) IBr3 
A) FeBr3 
B) FeBr2 
C) I2Br2 
D) IBr3

Question 17

Uranium, plutonium, and neptunium are classified as _____.

Accepted Answer

A) alkali metals 
B) alkaline earth metals 
C) lanthanides 
D) actinides 
A) alkali metals 
B) alkaline earth metals 
C) lanthanides 
D) actinides

Question 18

CH3− O − CH3is an example of an alcohol.

Accepted Answer

A) True 
 B)False

Question 19

The chemical formula for nitrite is NO3 − .

Accepted Answer

A) True 
 B)False

Question 20

The atomic mass of an atom is the number of _____ in that particular atom.

Accepted Answer

protons an

Cations are particles with fewer electrons than protons.

The molecular formula for dinitrogen pentoxide is _____.

Consider ²³⁵U. How many neutrons are present in this nuclide?

The systematic (IUPAC)name of MgI₂is _____.

The molecular formula for strontium chloride is _____.

CaCl₂is an example of a(n)_____.

In the modern periodic table, the densest element is found in _____.

The molecular formula for calcium phosphate is _____.

The systematic name of V₂O₅is vanadium pentoxide.

The vertical columns in the periodic table are called _____.

Which of the following is a metalloid?

How many electrons are present in ⁴⁰Ca²⁺?

Potassium has two stable isotopes: ³⁹K, which has a mass of 38.96 amu and makes up 93.26 % of the natural potassium found; and ⁴¹K, with a mass of 40.96 amu. What is the atomic weight of potassium?

_____ are examples of actinides.

Elements in a periodic family tend to combine with the same number of hydrogen atoms.

The molecular formula for iron(II)bromide is _____.

Uranium, plutonium, and neptunium are classified as _____.

CH₃− O − CH₃is an example of an alcohol.

The chemical formula for nitrite is NO₃⁻.

The atomic mass of an atom is the number of _____ in that particular atom.

Introduction to Chemistry

Molecules, Moles, Chemical Equations

Stoichiometry

Gases

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

Nuclear Chemistry Available Through Custom Publishing

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Exam 2: Atoms and Molecules

Cations are particles with fewer electrons than protons.

The molecular formula for dinitrogen pentoxide is _____.

Consider 235U. How many neutrons are present in this nuclide?

The systematic (IUPAC)name of MgI2is _____.

The molecular formula for strontium chloride is _____.

CaCl2is an example of a(n)_____.

In the modern periodic table, the densest element is found in _____.

The molecular formula for calcium phosphate is _____.

The systematic name of V2O5is vanadium pentoxide.

The vertical columns in the periodic table are called _____.

Which of the following is a metalloid?

How many electrons are present in 40Ca2+?

Potassium has two stable isotopes: 39 K, which has a mass of 38.96 amu and makes up 93.26 % of the natural potassium found; and 41 K, with a mass of 40.96 amu. What is the atomic weight of potassium?

_____ are examples of actinides.

Elements in a periodic family tend to combine with the same number of hydrogen atoms.

The molecular formula for iron(II)bromide is _____.

Uranium, plutonium, and neptunium are classified as _____.

CH3− O − CH3is an example of an alcohol.

The chemical formula for nitrite is NO3 − .

The atomic mass of an atom is the number of _____ in that particular atom.

Introduction to Chemistry

Molecules, Moles, Chemical Equations

Stoichiometry

Gases

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

Nuclear Chemistry Available Through Custom Publishing

Filters

Consider ²³⁵U. How many neutrons are present in this nuclide?

The systematic (IUPAC)name of MgI₂is _____.

CaCl₂is an example of a(n)_____.

The systematic name of V₂O₅is vanadium pentoxide.

How many electrons are present in ⁴⁰Ca²⁺?

Potassium has two stable isotopes: ³⁹K, which has a mass of 38.96 amu and makes up 93.26 % of the natural potassium found; and ⁴¹K, with a mass of 40.96 amu. What is the atomic weight of potassium?

CH₃− O − CH₃is an example of an alcohol.

The chemical formula for nitrite is NO₃⁻.