Formula
Match a formula from the wording of the question.
Formula first chemistry practice
NumerLab
Turn exam numericals into answer sheets that show the marks: identify the formula, substitute the values, solve, and finish with units.
Answer method
Built for the steps students get marked on.
Every answer stays easy to follow, whether you are revising alone or walking a student through the working.
Substitute
Show known values in the equation before calculating.
Solve
Keep the working readable for self-checking and teaching.
Units
Finish with the result and the chemistry unit that belongs to it.
Inside the app
Chemistry practice that stays clear from first line to final unit.
Common formulas for stoichiometry, gases, and solutions.
Three free guided solves each day before you upgrade.
Plans for solo revision and longer tutoring sessions.
Pricing
Start free. Upgrade when practice gets serious.
Free
Revision starter
$0Three guided solves per day.
Pro
Exam grind
$3.99Unlimited solves and copy-ready steps.
Tutor
Small batches
$9.99For tutors running longer practice sessions.