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Chemistry, 2nd Edition

Give your student a head start on chemistry with this course by an award-winning educator.
Chemistry, 2nd Edition is rated 4.5 out of 5 by 82.
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Rated 5 out of 5 by from Great explanations The professor makes this so easy to understand. He is down to earth and gives examples that I can understand. It also helps that I can replay parts that are difficult for me to grasp the first time. Best investment I have made.
Date published: 2021-09-24
Rated 4 out of 5 by from Great for what it is I have an extensive chemistry background so I already knew all the material, I understood it immediately, and had no difficulties with any of the problems. I just bought this this as a review and it was great for that. However, it is great in a restricted sense, it’s great for what it is, which is essentially a long course in how to do high school chemistry problems. The instructor is fascinating and engaging so the lessons move along in a very interesting way. However, I feel it doesn’t so much teach chemistry as teach, in a very accessible way, how to do elementary chemistry problems. If that’s why you’re buying it, you’ll love it, this guy can really teach. If you want a broad view of chemistry, you really won’t find that here.
Date published: 2021-06-27
Rated 5 out of 5 by from Easy and fun way to learn chemistry Professor Cardula does a great job of teaching chemistry! His courses are always interesting and easy to understand. Professor Cardula also has a great personality and isn't some boring professor who doesn't care about his students and " just goes through the motions" on each lecture. If you are having trouble with chemistry or are just starting chemistry, this is a great chemistry course to take!
Date published: 2021-02-02
Rated 5 out of 5 by from Fullfilled Bucket List I am 73 years old. Retired Healthcare professional. When I took General Chemistry in 1966, my professor was so confusing to me that I had to limp through future Chemistry classes the best I could. I made it, but I never really understood General Chemistry, so it has been an item on my retirement bucket list to retake and understand General Chem. Thank you Mr. Cardulla for making the subject understandable for me. I have a much better understanding of what goes into the making of the products I consume as an adult. Your methods of explaining really clicked with me and your attitude toward my learning was much appreciated. I hope your life is going well too, and know that an old dentist in Idaho achieved a great satisfaction from taking your course. Well done.
Date published: 2021-01-31
Rated 5 out of 5 by from I finally understand I have studied chemistry a long time ago and use it on a regular basis. But with these lectures given by Frank Cardulla, I understand the topic and its contents much better than ever. Solving chemistry problems have become easier and enjoyable. I would recommend this great course to starters or anyone who wants to refresh or improve their basic knowledge of chemistry.
Date published: 2021-01-25
Rated 5 out of 5 by from Makes a difficult subject understandable I am a 72 year old learner and I studied chemistry in high school and college but I didn't have an overall understanding that I thought I shold have. Mr. Cardulla has a unique ability to make a difficult subject understandable and makes the the pieces fit together. I recommend this course for anyone needing basic or beginning chemistry.
Date published: 2021-01-05
Rated 5 out of 5 by from Former Student Mr. Cardulla was my Sophomore Honors Chemistry teacher at Niles North High School in 1999. His class was much harder and challenging than AP Chemistry I took by a different teacher 2 years later when he moved from Niles North and started teaching at another high school. Maybe he did so well at teaching basic chemistry that AP Chemistry was a breeze? I don't know but he was the best teacher I ever had although I did not like him at all as a sophmore!
Date published: 2020-10-24
Rated 5 out of 5 by from Wonderful Course! Thank you, Professor Cardulla, This has been a lifesaver for me. I'm taking Gen Chem 2 in college, and your way of explaining is so clear and in detail. I'm grateful to you. It shows your dedication and effort towards this course.Thank you again.
Date published: 2020-10-21
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Discover why success in chemistry depends only on a genuine understanding of the field's concepts and ideas. Chemistry, 2nd Edition provides a foundation for future success by giving students a deep and thorough grasp of the fundamental problem-solving skills needed to study chemistry. Veteran science teacher and Professor Frank Cardulla's 36 carefully designed lectures are valuable tools for struggling students, students looking to perform better, home-schooled students, or anyone interested in finally understanding this important science.


Frank Cardulla
Frank Cardulla

I hope you choose to join our family of students in high school, college, home school, and those who want to learn just for learning's sake. Helping students has been my life's mission and I'd love to try and help you as well.


Niles North High School

Professor Frank Cardulla taught at Niles North High School in Skokie, IL, from 1964 to 1999. He subsequently taught at Lake Forest High School and Libertyville High School. Professor Cardulla earned both his B.S. in Teaching of Chemistry with honors and his M.S. in Teaching of Physical Sciences from the University of Illinois. He has received the National Catalyst Award for Outstanding Chemistry Teaching, a Presidential Award for Science Teaching, and the National James Bryant Conant Award. Additionally, he has received citations from institutions such as MIT and the University of Chicago for being named most influential teacher" by attending students. He has taught a wide variety of high school science courses

By This Professor

Chemistry, 2nd Edition
Chemistry, 2nd Edition


Introduction and Philosophy

01: Introduction and Philosophy

In this first lecture, Professor Cardulla explains how any student can find success in chemistry by cultivating a meaningful understanding of the concepts and quantitative thinking operations that underlie this often challenging area of study.

32 min
Basic Concepts of Quantitative Reasoning

02: Basic Concepts of Quantitative Reasoning

Introductory chemistry is not mysterious: It requires simple quantitative reasoning that comes naturally to most students. You learn about the types of numbers involved in chemistry and how to solve problems commonly encountered in high school chemistry.

30 min
Quantitative Reasoning in Everyday Life

03: Quantitative Reasoning in Everyday Life

Only a handful of important ideas must be mastered in order to be successful at solving chemistry problems. In this lecture, you review some basic guidelines for approaching any chemistry problem and try out your skills on a few sample problems that demonstrate how you can use everyday reasoning in your chemistry class.

31 min
Quantitative Reasoning in Chemistry-Density

04: Quantitative Reasoning in Chemistry-Density

Building on the ideas explored in the first three lectures, you examine a fundamental quantitative measurement in chemistry, density, and explore the real-world meaning of this measurement. You then solidify your understanding of this concept by working some basic density problems.

31 min
The SI (Metric) System of Measurement

05: The SI (Metric) System of Measurement

Next, you continue to lay a strong foundation for your understanding of chemistry by learning about one of the key tools you'll be using: the International System of Units (SI), or the metric system. This lecture explains why this system is so useful to scientists and lays out the prefixes and units of measurement that make up the metric system.

29 min
Converting between Systems of Measurement

06: Converting between Systems of Measurement

Now that you have established an understanding of the SI system, put your knowledge to work as you practice converting units from one system of measurement to another. You hone your conversion skills by working several sample problems.

29 min
Elements, Atoms, and the Periodic Table

07: Elements, Atoms, and the Periodic Table

In the next three lectures, you cover some fundamental topics that you'll need before you can launch into your study of chemistry. You examine the basic building blocks of matter-elements and the atoms that constitute them-and you learn how to interpret the information about elements presented in the periodic table

30 min
Ions, Compounds, and Interpreting Formulas

08: Ions, Compounds, and Interpreting Formulas

Learn about protons, electrons, and neutrons; how ions are formed from atoms; how these ions can combine to form compounds; and how you can determine the formulas of these compounds. Some molecular substances are discussed and you are introduced to the final number associated with every element-its atomic weight.

32 min
Isotopes and Families of Elements

09: Isotopes and Families of Elements

Discover how isotopes, which are different atoms of the same element, can actually differ in their weight because they contain different numbers of neutrons in their nuclei. Also, learn how different kinds of elements are grouped into both general categories (such as metals and nonmetals) as well as specific chemical "families," which then are arranged into the periodic table.

30 min
The Mole

10: The Mole

One of the most important concepts to master in an introductory chemistry course is the concept of the mole, which provides chemists with a way to "count" atoms and molecules. Learn how scientists use the mole and explore the quantitative definition of this basic unit.

29 min
Solving Mole Problems

11: Solving Mole Problems

By solving problems involving moles, you refine the quantitative techniques introduced in earlier lectures while increasing your familiarity with this important chemical value.

31 min
Avogadro's Hypothesis and Molar Volume

12: Avogadro's Hypothesis and Molar Volume

After mastering the mole, you move on to a related concept: the "molar volume," or the amount of space occupied by one mole. You apply this understanding of molar volume as you examine Avogadro's Hypothesis, a principle concerning the molar volume of gases.

30 min
Percent Composition and Empirical Formulas

13: Percent Composition and Empirical Formulas

In this lecture, you encounter two "classic" types of chemistry problems and learn the basic characteristics of each. The lecture concludes with several practice problems to help you master the skill of solving percent composition problems.

29 min
Solving Empirical Formula Problems

14: Solving Empirical Formula Problems

Continue your consideration of "classic" chemistry problems with a look at empirical formulas, and examine how empirical formulas relate to molecular formulas

30 min
Writing and Balancing Chemical Equations

15: Writing and Balancing Chemical Equations

What happens when you combine two or more elements? Through a variety of practice problems, you learn to identify when a chemical reaction has occurred, how to write chemical equations, and how to "balance" equations to conserve the atoms.

30 min
An Introduction to Stoichiometry

16: An Introduction to Stoichiometry

What are the quantitative relationships between the substances in a chemical reaction? The study of stoichiometry shows you how to apply your ability to balance equations to solve problems involving chemical reactions.

31 min
Stoichiometry Problems

17: Stoichiometry Problems

You extend your study of stoichiometry to consider more complex problems involving volume, molecules, and energy.

30 min
Advanced Stoichiometry

18: Advanced Stoichiometry

As you move on to more advanced stoichiometry problems, you see that they can be solved using a very simple approach. You encounter three terms often applied to chemical reactions: theoretical yields, actual yields, and percent yields.

31 min
An Introduction to Molarity

19: An Introduction to Molarity

One important idea to master in any introductory chemistry course is the concept of concentration of a solution. Here, you explore this concept, the components that make up a solution, and learn about a basic unit of measurement for concentration, molarity.

30 min
Solving Molarity Problems

20: Solving Molarity Problems

Extend your understanding of molarity by solving some typical problems encountered in the high school chemistry classroom. To foster your understanding of these problems, you are asked to draw upon the quantitative reasoning skills you previously used.

29 min
Advanced Molarity Problems

21: Advanced Molarity Problems

You are asked to take the concepts you learned about molarity in the last two lectures and apply them to a number of unfamiliar problems. These problems offer an opportunity to test your comprehension of the concepts you've been exploring.

30 min
Basic Concepts of Chemical Equilibrium

22: Basic Concepts of Chemical Equilibrium

Continue your study of chemical reactions by examining an important new concept: the equilibrium system. You start by looking carefully at the difference between reactions that "go to completion" and those that are "reversible."

30 min
An Introduction to the Equilibrium Constant

23: An Introduction to the Equilibrium Constant

By tracking and graphing a hypothetical reaction as it approaches a state of equilibrium, you gain a deeper understanding of the essential characteristics of equilibrium systems. Then, you're introduced to the single most important expression used to solve equilibrium problems: the equilibrium constant.

31 min
Interpreting an Equilibrium Constant

24: Interpreting an Equilibrium Constant

Your examination of the equilibrium constant continues. Learn exactly what the numerical value for an equilibrium constant tells and doesn't tell you about an equilibrium system.

30 min
Le Chatelier's Principle-Concentration

25: Le Chatelier's Principle-Concentration

Before you can solve equilibrium problems, you need to understand what happens to an equilibrium system when conditions are changed. You learn about a fundamental idea-Le Chatelier's Principle-which lays the groundwork for a broader understanding of equilibrium.

31 min
Le Chatelier-Pressure and Temperature

26: Le Chatelier-Pressure and Temperature

Having established a basic understanding of Le Chatelier's Principle, you explore how this principle plays out in a variety of situations in which an equilibrium system is changed.

30 min
An Introduction to Equilibrium Problems

27: An Introduction to Equilibrium Problems

You use your basic understanding of equilibrium systems to try to solve some problems. You tackle two kinds of equilibrium problems: ones in which you are asked to calculate the equilibrium constant for an equation, and ones in which you are asked to find the equilibrium concentration of a reactant or product.

31 min
The Self-Ionization of Water

28: The Self-Ionization of Water

After examining how different substances may behave when dissolved in water, you learn about the self-ionization of water and use this knowledge to solve problems. The lecture ends with a brief introduction to the pH of solutions.

30 min
Strong Acids and Bases-General Properties

29: Strong Acids and Bases-General Properties

You return to the topic of pH and learn about how pH relates to two kinds of compounds: acids and bases. Through an introductory problem, you explore the relationship of various ions within these compounds.

32 min
Solving Strong Acid and Base Problems

30: Solving Strong Acid and Base Problems

You gain a deeper understanding of acids, bases, and pH by working several sample problems. These exercises help clarify the difference between strong and weak acids and bases and between the idea of a "strong" concentration versus a "strong" acid or base.

27 min
Weak Acids and Bases

31: Weak Acids and Bases

Look at weak acids and bases, compounds that are only slightly ionized in water-based solutions. You learn how to solve the "classic" weak acid problem and apply the same approach to weak base problems.

32 min
Titrating Acids and Bases

32: Titrating Acids and Bases

Here, you explore "neutralization": the idea that if you add a base to an acid, it will tend to destroy the properties of the acid, and vice versa. You examine this reaction through demonstration of a laboratory procedure called titration.

31 min
Titration Curves and Indicators

33: Titration Curves and Indicators

Acid-base indicators, which change color when a solution switches from acid to base and back again, provide a striking demonstration of the transformation that occurs during titration. Learn how to use these indicators to determine the equivalence point of a titration, and examine what happens when you graph these reactions.

30 min
Solubility Equilibria-Principles, Problems

34: Solubility Equilibria-Principles, Problems

After learning about equilibrium systems, you move on to a particular type of system: "solubility equlibria," or the equilibria found in saturated solutions of slightly soluble ionic solids. You explore this concept as you practice solving a variety of related problems.

31 min
Solubility Equilibria-Common Ion Effect

35: Solubility Equilibria-Common Ion Effect

Your study of solubility equilibria continues with some advanced practice problems. Here, you encounter the last major type of equilibrium problem. To solve these problems, you revisit Le Chatelier's Principle and learn about some of the pitfalls to avoid when dealing with these kinds of equilibrium systems.

31 min
Putting It All Together

36: Putting It All Together

In this final lecture, you tackle problems that require you to pull together all the knowledge you've acquired. Through these challenging problems, you build confidence in your ability to unravel new problems and pursue more advanced levels of chemistry.

32 min