Who else wants an A in chemistry?

You need this course!

In a series of short videos, over 100 common chemistry problems are worked by a college chemistry professor. Through the six set of questions, you will learn the approach to tackle all the problems you will encounter in first year chemistry: dimensional analysis, moles, stoichiometry, gases, solutions, acids & bases.

Get rid of chemistry confusion once and for all

How to succeed in chemistry without really crying

• Chemistry is hard • It just is • You have to learn a new way to think • A new way to look at problems • Our professor spent years developing the correct progression of problems, with enough reiteration, to prepare you for every exam • No matter where you are taking first year chemistry •

Do You Make These Mistakes?

Who needs to study when we have "chemistry"?

Study Groups are great - in theory.  But...

  • How much work actually gets done?
  • Are you slowed down by students not as serious as you?
  • Who knows if you are using the right formula?
  • Who has the right answer when you are stuck?

Office Hour with your professor is valuable.  But...

  • How many other students are competing for your professor's attention?
  • What happens if you need more time to actually understand?
  • Is your professor annoyed you aren't getting it?

Pulling an all-nighter gives you lots of time.  But...

  • Staying up all night to study is a bad idea!
  • Cramming last minute for an exam is a bad idea!

Ask your parents for homework help.  But...

  • How long has it been since they took chemistry?

Build a Foundation in Chemistry You Can Be Proud Of!

Don't waste your money

You could hire a chemistry tutor.  Or enroll in small group tutoring through an educational consultant company.

  • Private Chemistry Tutor:  $35-$75 an hour
  • Small Group Tutoring Company:  $40-$130 an hour

Instead, take this course.  You will learn the lingo and understand the vocabulary any chemistry professor will throw at you and

  • Go into any first year chemistry class with confidence!
  • Navigate chemistry class like a pro!
  • Ace chemistry class!


“Chemistry is hard for me, and my teacher wasn't helping. Everyone in class is stressed out. These videos made me understand much better, and I think I will get an A!”

High School Student

Got my grade back up

“I don't want to waste time in a study sessions with students who aren't as serious as I am. I don't want to try to work around a private tutor's schedule, even if I could afford it with my college student budget. Joy Lab is the answer.”

University Student

Better than a private tutor

“I was frustrated with my son's chemistry class - he spent hours working on chemistry, yet continued to get poor grades on tests. I couldn't even help him with the homework. Now that he is working through the chemistry videos, he understands and is less bad-tempered. There is peace in our home!”


My son understands now

Work Smarter

Don't waste your time

The single most important factor for determining success in chemistry is how many problems worked.

There is no magic number.  Each student has to work as many chemistry problems as it takes until the problems become "easy".  You simply must put in the time.

  • dimensional analysis
  • moles
  • stoichiometry
  • gases
  • solutions
  • acids & bases

The second most important factor for determining success in chemistry is knowing how to attack each problem.

Your professor likely teaches this to you in class.  Your textbook is probably well regarded. But no one understands chemistry after hearing it just one time.  Or two times.

  • Your professor does not have time in class to go over all chemistry problems with you.
  • Your text book has problem sets for you to work, but it has no guidance on how to work each problem correctly.

Work the problems in these videos along with our chemistry professor.

  • Our professor demonstrates the shortcuts and strategies to attack each problem.
  • Go back and re-watch each problem being solved until you can solve it on your own.
  • Use these videos along with your own homework - they will be similar.
  • Our professor trains you on the right way to use your calculator so you wont be slowed down during exams.

Course Curriculum

  • 01

    Dimensional Analysis

    • Dimensional Analysis Problem Sheet

    • Dimensional Analysis Problem Sheet (with space to work)

    • Periodic Table

    • Dimensional 1: How many inches in 2.0 feet?

    • Dimensional 2: How many mm in 6.0 feet?

    • Dimensional 3: Convert grams to ounces.

    • Dimensional 4: How many mm in 1.5 miles?

    • Dimensional 5: Convert liters to cubic inches.

    • Dimensional 6: Convert feet per second to miles per hour.

    • Dimensional 7: How much would 1021 atoms of silver cost?

    • Dimensional 8: Convert miles per gallon to centimeters per liter.

    • Dimensional 9: Convert milliliters to fluid ounces.

    • Dimensional 10: How long does it take a car to travel 355 centimeters?

    • Dimensional 11: How many grams of mercury in a beaker using density.

    • Dimensional 12: Convert grams per milliliter to pounds per cubic inch.

    • Dimensional 13: How many atoms of gold can be purchased for $5?

    • Dimensional 14: How many grams of sodium chloride in a 3.0% solution?

    • Dimensional 15: How many hamburgers to get RDA of protein?

    • Dimensional 16: How many grams of tin in a sample of bronze?

    • Dimensional 17: What is the amoxicillin dose for a child?

    • Dimensional 18: How much sodium in diet soda?

    • Dimensional 19: How much aluminum in an alloy?

    • Dimensional 20: How many calories to go bowling?

    • Done with Dimensional Analysis

  • 02


    • Moles Problem Sheet

    • Moles Problem Sheet (with space to work)

    • Periodic Table

    • Moles 1: What is the mass of 2 moles of cobalt?

    • Moles 2: What is the mass of 5 billion cobalt atoms?

    • Moles 3: How many moles of oxygen in 2.22 grams of oxygen gas?

    • Moles 4: How many moles of aluminum oxide in 12.3 grams?

    • Moles 5: How many moles of calcium in 1.234 grams of calcium chlorate?

    • Moles 6: How many grams of nitrogen in 1.50 moles of ammonium sulfate?

    • Moles 7: How many moles of sulfur in 2.00 grams of lead(II) sulfate?

    • Moles 8: How many pounds does 1.25 moles of sulfur weigh?

    • Moles 9: How many grams does 2.45 moles of diphosphorous pentoxide weigh?

    • Moles 10: How many moles of aluminum in 12.3 grams of aluminum oxide?

    • Moles 11: How many moles of sodium in 2.25 moles of sodium oxide?

    • Moles 12: What is the mass of 11.06 trillion carbon dioxide molecules?

    • Moles 13: How many atoms of zinc in a sample of alloy?

    • Moles 14: How many atoms of mercury in 25.0 milliliters of mercury?

    • Moles 15: How many moles of zinc in a sample of alloy?

    • Moles 16: How many moles of water in a beaker of water?

    • Moles 17: How many moles of oxygen in a sample of water?

    • Moles 18: How many moles of hydrogen in a sample of water?

    • Moles 19: How many grams of oxygen in a sample of water?

    • Moles 20: How many moles of sodium chloride in a sample of 3.0% solution?

    • Periodic Table

    • Too Many Moles

  • 03


    • Stoichiometry Problem Sheet

    • Stoichiometry Problem Sheet (with space to work)

    • Periodic Table

    • Stoichio 1: How many moles of water forms when 1.5 moles of hydrogen gas react with an excess of oxygen gas?

    • Stoichio 2: 3 grams hydrogen gas produces how many moles of water?

    • Stoichio 3: How many molecules carbon dioxide produced when 327 grams methane react?

    • Stoichio 4: How many grams water form from 1.5 moles hydrogen gas?

    • Stoichio 5: How many grams of hydrogen required to react with 1.5 moles oxygen gas?

    • Stoichio 6: Calculate the weight of chlorine gas produced from a mass of HCl.

    • Stoichio 7: Calculate the grams of hydrogen gas formed when 0.856 grams of hydrochloric acid react.

    • Stoichio 8: Calculate the grams of oxygen gas consumed when reacted with calcium.

    • Stoichio 9: Calculate the grams of water produced when hydrogen reacts with oxygen.

    • Stoichio 10: How many grams of hydrogen are required to react with a mass of oxygen?

    • Stoichio 11: How many grams of HCl required to react with a mass of Al?

    • Stoichio 12: Calculate the mass of phosphorus pentachloride formed when P4 is reacted with chlorine gas.

    • Stoichio 13: Calculate the number of molecules of PCl5 formed from a mass of P4.

    • Stoichio 14: Calculate grams HCl required to react with 2.9 mL of aluminum.

    • Stoichio 15: Limiting reactant - moles carbon dioxide formed from methane and oxygen.

    • Stoichio 16: Limiting reactant - moles MgO formed from magnesium and oxygen.

    • Stoichio 17: Limiting reactant - how many grams MgO formed from magnesium and oxygen.

    • Stoichio 18: Limiting reactant - how many moles carbon dioxide formed from propane and oxygen.

    • Stoichio 19: Limiting reactant - composition of reaction flask.

    • Stoichio 20: Limiting reactant - thermite.

    • Sick and Tired of Stoichiometry

  • 04


    • Gases Problem Sheet

    • Gases Problem Sheet (with space to work)

    • Periodic Table

    • Gases 1: PVT

    • Gases 2: PVT

    • Gases 3: Pressure of 1 billion molecules.

    • Gases 4: Calculate moles of gas.

    • Gases 5: Calculate grams of gas.

    • Gases 6: Stoichiometry and gases.

    • Gases 7: Volume of gas and stoichiometry.

    • Gases 8: Volume of gas and stoichiometry.

    • Gases 9: Density of gas.

    • Gases 10: Calculate the molar mas of gas.

    • Need More Gas

  • 05


    • Solutions Problem Sheet

    • Solutions Problem Sheet (with space to work)

    • Periodic Table

    • Solutions 1: Grams given molarity.

    • Solutions 2: Calculate percent concentration.

    • Solutions 3: Calculate molarity given grams.

    • Solutions 4: Calculate grams given molarity.

    • Solutions 5: Calculate percent concentration.

    • Solutions 6: Grams solvent given target percentage.

    • Solutions 7: Grams of solute given percentage and density.

    • Solutions 8: Calculate molarity given percentage and density.

    • Solutions 9: Stoichiometry with molarity.

    • Solutions 10: Stoichiometry with percent concentration.

    • Solutions 11: Stoichiometry with molarity.

    • Solutions 12: Limiting reactant with percent concentration.

    • Solutions 13: Dilution.

    • Solutions 14: Dilution.

    • Solutions 15: Stoichiometry with percent concentration.

    • Solutions 16: Limiting reactant with molarity.

    • Solutions Solutions

  • 06

    Acids & Bases

    • Acids Bases Problem Sheet

    • Acids Bases Problem Sheet (with space to work)

    • Periodic Table

    • A-B 1: [H+] of an acid solution.

    • A-B 2: pH of an acid solution.

    • A-B 3: [OH-] of an acid solution.

    • A-B 4: pH of a base solution.

    • A-B 5: [H+] given pH.

    • A-B 6: [OH-] given pH.

    • A-B 7: [OH-] given pH.

    • A-B 8: pH of solution after dilution.

    • A-B 9: pH upon mixing acid and base.

    • A-B 10: pH of an acid solution.

    • A-B 11: [OH-] of an acid solution.

    • A-B 12: [OH-] of a basic solution.

    • A-B 13: [H+] of a basic solution.

    • A-B 14: pH of a basic solution.

    • A-B 15: Mass of acid for a solution with a target pH.

    • A-B 16: Mass of base for a solution with a target pH.

    • A-B 17: Titration.

    • A-B 18: Titration.

    • A-B 19: mL of acid to neutralize a base.

    • A-B 20: pH of solution of acid mixed with base.

    • All Done with Acids and Bases

Special Features

But wait...there's more!

  • Problem Sheets

    Work the style that fits you. Print out all the section problems with room to work, or simply look at all the problems on one sheet as you do them along with the professor.

  • Timely Feedback Surveys

    How are you doing in that particular section? Let Joy Lab know with your feedback survey, and Joy Lab will recommend the best course of action, tailored for you.

  • Bonus Lab Equipment Use Videos

    Success in chemistry means knowing your way around a balance, caliper, and pipette. Get the advantage by watching our comprehensive, yet funny, lab equipment instructional videos.


  • Who should take this course?

    High school chemistry students, home schoolers, first year college chem students, high school teachers who suddenly find themselves teaching chemistry in addition to coaching volleyball.

  • Why should I pay for this course, instead of just looking at free YouTube chemistry videos?

    With Joy Lab you get the answers you need by an experienced professional college professor. You will not make the common mistakes other chemistry students make, because we know these mistakes and train you to avoid them. With Joy Lab you get a lot of practice working problems, all in one place, which other free sites cannot provide. Other free sites do not provide calculator guidance. Commit to success. Be at the top of your class!

  • Why is it so expensive? Do you have military/single mother/good student/AAA discounts?

    You get 106 problems clearly explained by an experienced college professor. That’s less than $2.10 a problem. These problems take 7.83 hours to go over. That’s less than $28 an hour. Quality private tutors run $35-$75 an hour. Professional group tutoring sessions run $40-$130 and hour. We are unable to offer discounts. Study this course, and you will succeed without the additional expense of private tutors!

  • Do you guarantee I’ll get an A?

    It all depends on you. So, no, we do not guarantee you’ll earn an A. To succeed in almost anything takes time and practice and effort. If you think chemistry is too hard, and you give up on the first difficult problem, then you will not get an A. If you watch the videos, work every one of these problems (maybe even more than once), and read your text book, and pay attention to your teacher, you will understand chemistry and how to work the problems correctly. That is a good way to ace chemistry! You can do it!

  • If I’m failing chemistry, will your course help me pass?

    This course will help you stay ahead. This course will help keep you from falling behind. But if you are just finding us, and already failing chemistry, it is probably too late. Unless you are willing to work long and hard, and concentrate while watching the videos, and work every one of these problems (maybe even more than once), it will be unlikely you will get your grade out of the F range. But, if you study this course, the next time you take chemistry you will succeed!

  • What calculator do I need?

    Use the calculator that your instructor suggests, or requires. It should have a log key and an exponent key. In these videos we use an Android app called “RealCalc”.

  • What is the best way to use this course?

    Watch all the problems for one series. Next, do the same problems without the video. After doing them all on your own, go back and check your answers with the video.

  • Is that a bird I hear?

    Yes, it’s Chirpy the Cockatiel.

  • What music is playing?

    In order: Cello, wooden recorder, violin, the Vibrafun app, mouth trumpet, and child’s xylophone.

End frustration by mastering strategies that work!

Stop falling behind

Meet Our Instructor

Our chemistry professor has taught for over three decades. Professor Lehman got his Masters of Science in Chemistry at California Polytechnic State University, Pomona, and his teaching credential at the University of California, Riverside. After spending a few years teaching middle school physical science and high school chemistry, Professor Lehman found his calling at the community college. Many of his students go on to pharmacy school, pharm tech programs, nursing courses, medical school, and forensic science degrees. After teaching for so many years he determined the biggest factor for success in chemistry - working lots and lots of chemistry problems. Professor Lehman developed this video course to give his students ample practice in all the common questions on any chemistry exam. He knows what skills students need to succeed in first year chemistry.

Professor Lehman

Chemistry Professor

Thousands of Students Have Confidence in Chemistry Class They Never Thought Possible!

Stop falling behind

You can do it! You can succeed in chemistry!