Mole calculation trainer

GCSE & A-level

The one skill on every chemistry paper. Ten quick questions on moles from mass, mass from moles and concentration — the trick is choosing ÷ or × and not slipping a decimal point.

Need the equations first?

Every amount-of-substance formula — plus the three-step method examiners reward — on one page.

Mole calculations reference

Struggling with chemistry calculations? The first tutoring lesson is free.

Free revision tool by Oscar Song Tutoring