Transform your chemistry lecture with active learning

Used at 40+ Campuses

Drawing Lewis structures
just became a lot more fun

Drawing Lewis structures
just became a lot more fun

Our custom built Lewis structure drawing tool allows students to quickly and intuitively create structures on any mobile device.

Not only does it allow students to draw, but it was designed from the ground up to help students visualize the relationship between structure and molecular shape.

Assign 2000+
interactive problems

Assign 2000+ interactive problems

Quiz your students on any topic in General Chemistry, Introductory Chemistry, or GOB Chemistry from Chem101’s built-in problem bank.

  • Study of Chemistry
  • Components of Matter
  • Chemical Nomenclature
  • Stoichiometry & Chemical Reactions
  • Aqeuous Solutions
  • Gases
  • Thermochemistry
  • Quantum Theory & Atomic Structure
  • Electron Configurations
  • Chemical Periodicity
  • Chemical Bonding & Structure
  • Intermolecular Forces & Solids
  • Physical Properties of Solutions
  • Chemical Kinetics
  • Chemical Equilibrium
  • Acid-Base Equilibria
  • Solubility
  • Chemical Thermodynamics
  • Electrochemistry
  • Nuclear Chemistry
  • Transition Metal Chemistry
  • Introduction to Organic Chemistry
  • Spectroscopy

Student engagement has
never been this easy

Student engagement has never been this easy

Chem101’s intuitive user interface makes it simple to create and send assignments to your students whenever and wherever you are.

Automated and specific
feedback for students

Automated and specific
feedback for students

Students receive answer-specific feedback on every built-in problem. On drawing questions, Chem101 intelligently identifies missed concepts.

Class performance
in real time

Class performance
in real time

Instructors receive class performance in real time for every assigned problem with the three most common mistakes.

For drawing questions, Chem101 automatically analyzes student submissions and pulls out the common incorrect structures. Equivalent structures drawn at different orientations are even grouped together for convenience.

Export student and class activity to Excel in a tap of a button.

Bring your own device.
Any device.

Bring your own device.
Any device.

Students and instructors may access Chem101 from iPhone, iPad, Android*, or via Web on any Mac or PC.

*Student-only access for Android currently available

The results

Watch classroom video

The results

We initially tested Chem101’s Chemical Bonding & Structure module with 2,000 students across 8 schools. 40% of students said using the product made them more interested in chemistry and we measured up to a 200% improvement in student learning gains.

Spring 2018 Pricing

$15 per student

Individual subscriptions or course licenses available

Book a demo to learn more

Here's what they're saying




My students were having so much fun with Chem101, I actually had to kick them out at the end of class by telling them they could play with it at home at any time. In addition, their normalized learning gains on the common final exam were significantly higher than those of students in sections that did not use the app.

Kathleen Kolbet

Professor of Chemistry,

Truckee Meadows Community College

I really enjoyed using Chem101! I felt like I was playing a game on my phone instead of doing homework. This app is effective, designed well, and makes learning chemistry fun!

Christina D.

Student in CHEM1040,

University of Cincinnati

Chem101 allows my students to draw Lewis structures intuitively with very little learning curve so more time can be spent learning chemistry and less time learning the program. My students and I both enjoyed having a large pool of practice questions to choose from to master the material.

Daniel Waddell

Assistant Professor of Chemistry,

University of Cincinnati

Compared to other websites such as Sapling, Chem101 was simpler to navigate, easier to complete specific activities such as drawing Lewis structures, and overall a better experience for learning. I also preferred Chem101 to clickers simply because it is more interactive than choosing a multiple choice option.

Zack M.

Student in 09-105,

Carnegie Mellon University

While testing Chem101 in my class, I noticed students were engaged and I never heard the typical “huh” I normally obtain when I ask them to pull out their clickers. This app is a terrific tool for students and it would be great if it could be expanded to also cover other topics in chemistry.

Daniele Ramella

Assistant Professor of Chemistry,

Temple University

I enjoyed using Chem101 for Lewis structures because it really helped me visualize where everything needed to go. It makes it easy to explore other possible Lewis structures and fix mistakes. A dynamic app like this is great for visual/kinesthetic learners.

Kelsey C.

Student in GenChem121,

Duquesne University

It was a delight to hear the "buzz" of students talking to each other as they did the questions. Students also seemed to enjoy using Chem101 and learning from the app. I would highly recommend it to anyone who teaches a class in general chemistry, particularly in a large lecture hall.

Ruben Savizky

Professor and Lecturer of Chemistry,

The Cooper Union, Columbia University

Chem101 was the best app that I have ever used for school. It was clear and explained things very well when answering questions. Using the app in class made learning chemistry fun and easy.

Garrett C.

Student in GenChem121,

Duquesne University

Meet the team that's transforming the STEM classroom

Justin Weinberg, PhD


Justin is the visionary behind 101 and has been teaching forms of math and science for a decade as a tutor and teaching assistant. Now, he is leading 101 to bring its active learning platform to college STEM courses across the country. Justin recently received his Ph.D. in chemical engineering at Carnegie Mellon University where he was an NSF Fellow.

Igor Belyayev


Igor leads technical development at 101, responsible for bringing our novel interactive experiences to reality on iOS, Android, and Web. He's worked as a mobile developer at startups like and Hackerati, as well as media companies like The Huffington Post and Viacom. Igor and Justin have been creating apps together since 2011.

Tamara Crawford

Account Manager

Tamara manages 101’s sales pipeline, bringing her background as an elementary school teacher and sales leader at Macmillan to introduce Chem101 to educators across the country. Tamara holds a bachelor’s degree in education and is passionate about improving student success and outcomes in the classroom.

Tom Redis

Lead Engineer

Driven by a passion for education and a knack for problem solving, Tom leads mobile and web development at 101. With an extensive background in competitive mathematics and an in-depth knowledge of computer science, he is currently pioneering a novel method of development on all platforms with a single code base.

Harsh Poddar

Platform Engineer

Harsh builds and maintains 101’s platform architecture, bringing his top-notch experience at Microsoft and Facebook to ensure product reliability in the largest of lecture halls. He is currently working towards his bachelor's degree in computer science at the University of Massachusetts Amherst.


Our supporters


I'm a


We promise to only send you important updates related to new products.

Book Demo

Please enter your contact information below and a 101 team member will reach out to schedule a personal Chem101 demonstration

First name

Last name


Phone number

School name

Title or position

Please enter all fields

Thank you for submitting your
information! Our team will reach out
to you shortly to schedule your
personal demo of Chem101.