Question 1

An atom ________ electrons when it forms a cation.

Accepted Answer

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

Question 2

A covalent bond involves ________ electrons between atoms.

Accepted Answer

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

Question 3

2 moles of CH3CH2CH2CH3 contains 5 moles of H2 molecules.

Accepted Answer

A) True 
 B)False

Question 4

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 5

The reaction of calcium and sulfur produces:

Accepted Answer

A) Ca2S 
B) CaS2 
C) CaS 
D) Ca2S3 
A) Ca2S 
B) CaS2 
C) CaS 
D) Ca2S3

Question 6

Hydrogen sulfide (H2S)is a covalent compound.

Accepted Answer

A) True 
 B)False

Question 7

Which quantity contains the fewest moles?

Accepted Answer

A) 10 g N2 
B) 10 g CO 
C) 10 g Si 
D) 10 g AlH3 
A) 10 g N2 
B) 10 g CO 
C) 10 g Si 
D) 10 g AlH3

Question 8

Ammonium nitrate is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 9

Which of these molecules has trigonal pyramidal molecular geometry?

Accepted Answer

A) NF3 
B) BF3 
C) SO3 
D) AlF3 
A) NF3 
B) BF3 
C) SO3 
D) AlF3

Question 10

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 electrons 
A) 20 protons, 20 electrons 
B) 20 protons, 22 electrons 
C) 20 protons, 18 electrons 
D) 20 protons, 19 electrons

Question 11

Metals tend to ________ electrons and form ________.

Accepted Answer

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

Question 12

Complete the following table.

Accepted Answer

line 1)nitrite
line

Question 13

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

Accepted Answer

A) NO3- 
B) SO4-2 
C) CO3-2 
D) PO4-3 
A) NO3- 
B) SO4-2 
C) CO3-2 
D) PO4-3

Question 14

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) ionic 
A) polar covalent 
B) coordinate covalent 
C) purely (nonpolar)covalent 
D) ionic

Question 15

Which of the following molecules is nonpolar?

Accepted Answer

A) NH3 
B) CH3Cl 
C) CCl4 
D) H2O 
A) NH3 
B) CH3Cl 
C) CCl4 
D) H2O

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) +2 
A) -2 
B) +34 
C) -36 
D) +2

Question 17

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-C 
A) C-H 
B) N-C 
C) O-N 
D) O-C

Question 18

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 19

Which of the following molecules is polar?

Accepted Answer

A) CH4 
B) CO2 
C) SO2 
D) SO3 
A) CH4 
B) CO2 
C) SO2 
D) SO3

Question 20

The outer electron shell is called the ________ shell.

Accepted Answer

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

An atom ________ electrons when it forms a cation.

A covalent bond involves ________ electrons between atoms.

2 moles of CH₃CH₂CH₂CH₃ contains 5 moles of H₂ molecules.

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

The reaction of calcium and sulfur produces:

Hydrogen sulfide (H₂S)is a covalent compound.

Which quantity contains the fewest moles?

Ammonium nitrate is an ionic compound.

Which of these molecules has trigonal pyramidal molecular geometry?

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

Metals tend to electrons and form .

Complete the following table.

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

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

Which of the following molecules is nonpolar?

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

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

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

Which of the following molecules is polar?

The outer electron shell is called the ________ shell.

Chemistry Basics - Matter and Measurement

Atoms and Radioactivity

Introduction to Organic Compounds

Chemical Reactions

Carbohydrates - Lifes Sweet Molecules

Whats the Attraction State Changes, Solubility, and Lipids

Solution Chemistry: How Sweet Is Your Tea

Acids, Bases, and Buffers in the Body

Proteins - Workers of the Cell

Nucleic Acids - Big Molecules With a Big Role

Food As Fuel - A Metabolic Overview

Filters

Exam 3: Compounds - Putting Particles Together

An atom ________ electrons when it forms a cation.

A covalent bond involves ________ electrons between atoms.

2 moles of CH3CH2CH2CH3 contains 5 moles of H2 molecules.

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

The reaction of calcium and sulfur produces:

Hydrogen sulfide (H2S)is a covalent compound.

Which quantity contains the fewest moles?

Ammonium nitrate is an ionic compound.

Which of these molecules has trigonal pyramidal molecular geometry?

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

Metals tend to ________ electrons and form ________.

Complete the following table.

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

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

Which of the following molecules is nonpolar?

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

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

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

Which of the following molecules is polar?

The outer electron shell is called the ________ shell.

Chemistry Basics - Matter and Measurement

Atoms and Radioactivity

Introduction to Organic Compounds

Chemical Reactions

Carbohydrates - Lifes Sweet Molecules

Whats the Attraction State Changes, Solubility, and Lipids

Solution Chemistry: How Sweet Is Your Tea

Acids, Bases, and Buffers in the Body

Proteins - Workers of the Cell

Nucleic Acids - Big Molecules With a Big Role

Food As Fuel - A Metabolic Overview

Filters

2 moles of CH₃CH₂CH₂CH₃ contains 5 moles of H₂ molecules.

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

Hydrogen sulfide (H₂S)is a covalent compound.

Metals tend to electrons and form .