Question 1

Hydrogen sulfide (H2S)is a covalent compound.

Accepted Answer

A) True 
 B)False

Question 2

Ammonium nitrate is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 3

How many protons and electrons are there in the calcium ion?

Accepted Answer

A)  20 protons, 20 electrons
B)  20 protons, 22 electrons
C)  20 protons, 18 electrons
D)  20 protons, 19 electronsE) A) and C)
F) None of the above

Question 4

The outer electron shell is called the ________ shell.

Accepted Answer

The answer of The outer electron shell is called the...

Question 5

Which quantity contains the fewest moles?

Accepted Answer

A)  10 g N2
B)  10 g CO
C)  10 g Si
D)  10 g AlH3E) All of the above
F) B) and C)

Question 6

Which of the following molecules is polar?

Accepted Answer

A)  CH4
B)  CO2
C)  SO2
D)  SO3E) A) and B)
F) A) and C)

Question 7

The molar mass of an element in grams is numerically equal to that element's atomic mass in amu.

Accepted Answer

A) True 
 B)False

Question 8

Which of these molecules has trigonal pyramidal molecular geometry?

Accepted Answer

A)  NF3
B)  BF3
C)  SO3
D)  AlF3E) B) and D)
F) A) and B)

Question 9

A covalent bond involves ________ electrons between atoms.

Accepted Answer

The answer of A covalent bond involves ________ electrons between...

Question 10

Draw the Lewis structures for the following compounds. Draw all possible resonance structures. What is the molecular geometry and the polarity of each compound?
A)CO32-
B)NF3
C)CHCl3
D)SO2

Accepted Answer

Question 11

The reaction of calcium and sulfur produces:

Accepted Answer

A)  Ca2S
B)  CaS2
C)  CaS
D)  Ca2S3E) B) and C)
F) A) and D)

Question 12

Which of the following molecules is nonpolar?

Accepted Answer

A)  NH3
B)  CH3Cl
C)  CCl4
D)  H2OE) None of the above
F) B) and C)

Question 13

Given the electronegativities below, which of the following covalent single bonds is the most polar?
Element: H C N O
Electronegativity 2.1 2.5 3.0 3.5

Accepted Answer

A)  C-H
B)  N-C
C)  O-N
D)  O-CE) None of the above
F) A) and D)

Question 14

Which of the following anions has the same charge as the hydroxide ion?

Accepted Answer

A)  NO3-
B)  SO4-2
C)  CO3-2
D)  PO4-3E) None of the above
F) B) and D)

Question 15

A bond where the electrons are shared unequally is called a(n) :

Accepted Answer

A)  polar covalent
B)  coordinate covalent
C)  purely (nonpolar) covalent
D)  ionicE) A) and D)
F) B) and C)

Question 16

An ion with an atomic number of 34 and 36 electrons has a ________ charge.

Accepted Answer

A)  -2
B)  +34
C)  -36
D)  +2E) A) and B)
F) A) and C)

Question 17

2 moles of CH3CH2CH2CH3 contains 5 moles of H2 molecules.

Accepted Answer

A) True 
 B)False

Question 18

An atom ________ electrons when it forms a cation.

Accepted Answer

The answer of An atom ________ electrons when it forms...

Question 19

Complete the following table.

Accepted Answer

line 1)nitrite
line ...

Question 20

Metals tend to ________ electrons and form ________.

Accepted Answer

The answer of Metals tend to ________ electrons and form...

Exam 3: Compounds - Putting Particles Together

Metals tend to ________ electrons and form ________.

Correct AnswerverifiedShow Answer

An ion with an atomic number of 34 and 36 electrons has a ________ charge.

Correct AnswerverifiedShow Answer

Which of the following molecules is nonpolar?

Correct AnswerverifiedShow Answer

A bond where the electrons are shared unequally is called a(n) :

Correct AnswerverifiedShow Answer

Complete the following table.

Correct Answerverifiedline 1)nitriteline ...View AnswerShow Answer

The reaction of calcium and sulfur produces:

Correct AnswerverifiedShow Answer

Which quantity contains the fewest moles?

Correct AnswerverifiedShow Answer

Which of the following anions has the same charge as the hydroxide ion?

Correct AnswerverifiedShow Answer

Which of these molecules has trigonal pyramidal molecular geometry?

Correct AnswerverifiedShow Answer

The molar mass of an element in grams is numerically equal to that element's atomic mass in amu.

Correct AnswerverifiedShow Answer

Given the electronegativities below, which of the following covalent single bonds is the most polar? Element: H C N O Electronegativity 2.1 2.5 3.0 3.5

Correct AnswerverifiedShow Answer

How many protons and electrons are there in the calcium ion?

Correct AnswerverifiedShow Answer

Which of the following molecules is polar?

Correct AnswerverifiedShow Answer

Hydrogen sulfide (H2S)is a covalent compound.

Correct AnswerverifiedShow Answer

An atom ________ electrons when it forms a cation.

Correct AnswerverifiedShow Answer

Draw the Lewis structures for the following compounds. Draw all possible resonance structures. What is the molecular geometry and the polarity of each compound? A)CO32- B)NF3 C)CHCl3 D)SO2

Correct AnswerverifiedShow Answer

A covalent bond involves ________ electrons between atoms.

Correct AnswerverifiedShow Answer

2 moles of CH3CH2CH2CH3 contains 5 moles of H2 molecules.

Correct AnswerverifiedShow Answer

Ammonium nitrate is an ionic compound.

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The outer electron shell is called the ________ shell.

Correct AnswerverifiedShow Answer

Metals tend to electrons and form .

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line 1)nitrite
line ...
View Answer

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Hydrogen sulfide (H₂S)is a covalent compound.

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Draw the Lewis structures for the following compounds. Draw all possible resonance structures. What is the molecular geometry and the polarity of each compound? A)CO₃^2- B)NF₃ C)CHCl₃ D)SO₂

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2 moles of CH₃CH₂CH₂CH₃ contains 5 moles of H₂ molecules.

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