How it works
Each lesson is a short read with worked examples, then a few practice questions. Some ask you to work out a number (grams, moles, kelvin, kilowatts), some have you pick an answer, and some have you tap steps into the right order. Keep a calculator handy; the question says how to round. You can try again as often as you like; after two misses there’s a button to show the answer. Where a lesson has one, the Particle Lab experiment lets you watch the idea happen with atoms and molecules.
What do I need to know first?
Material and energy balances helps. The first lesson recaps the units and balances the rest uses, and the one idea behind it all. No calculus: each law is written as a rate equals a driving force over a resistance.
The other chemistry and chemical engineering courses
- Chemistry: General chemistry: 8 lessons
- Chemistry: Organic chemistry: 7 lessons
- Chemistry: Physical chemistry: 7 lessons
- Chemistry: Analytical chemistry: 8 lessons
- Material and energy balances: 7 lessons
- Reaction engineering: 7 lessons
- Separations and process design: 8 lessons
Where is my progress saved? In this browser, like the rest of the site. Nothing to sign up for.
For learning only. It isn’t lab safety training, an accredited qualification or engineering advice: real lab work and plant design follow your organization’s safety procedures, the safety data sheets and the codes that apply where you are. Worked numbers use rounded values and simple models, so check real designs against proper data.