Question 1

The total number of valence electrons in a molecule of C2H2F4 is:

Accepted Answer

A) 28 
B) 32 
C) 38 
D) 48 
A) 28 
B) 32 
C) 38 
D) 48

Question 2

How many electrons are in the highest energy level of strontium?

Accepted Answer

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

Question 3

A thimble of water contains 4.0 × 1021 molecules. The number of moles of H2O is:

Accepted Answer

A) 2)4 × 1045 
B) 6)6 × 10-3 
C) 6)6 × 10-23 
D) 2)4 × 1023 
A) 2)4 × 1045 
B) 6)6 × 10-3 
C) 6)6 × 10-23 
D) 2)4 × 1023

Question 4

Nonmetallic elements have larger electronegativity values than metallic elements.

Accepted Answer

A) True 
 B)False

Question 5

How many electrons can be contained in the third energy level?

Accepted Answer

A) 2 
B) 8 
C) 10 
D) 18 
A) 2 
B) 8 
C) 10 
D) 18

Question 6

Which of the following is the sulfate ion?

Accepted Answer

A) CO32- 
B) SO42- 
C) PO43- 
D) S2- 
A) CO32- 
B) SO42- 
C) PO43- 
D) S2-

Question 7

Which of these polyatomic ions has a positive charge?

Accepted Answer

A) Ammonium 
B) Hydroxide 
C) Phosphate 
D) Acetate 
A) Ammonium 
B) Hydroxide 
C) Phosphate 
D) Acetate

The total number of valence electrons in a molecule of C₂H₂F₄is:

How many electrons are in the highest energy level of strontium?

A thimble of water contains 4.0 × 10²¹ molecules. The number of moles of H₂O is:

Nonmetallic elements have larger electronegativity values than metallic elements.

How many electrons can be contained in the third energy level?

Which of the following is the sulfate ion?

Which of these polyatomic ions has a positive charge?

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

The total number of valence electrons in a molecule of C2H2F4 is:

How many electrons are in the highest energy level of strontium?

A thimble of water contains 4.0 × 1021 molecules. The number of moles of H2O is:

Nonmetallic elements have larger electronegativity values than metallic elements.

How many electrons can be contained in the third energy level?

Which of the following is the sulfate ion?

Which of these polyatomic ions has a positive charge?

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

The total number of valence electrons in a molecule of C₂H₂F₄is:

A thimble of water contains 4.0 × 10²¹ molecules. The number of moles of H₂O is: