Free Printable Chemistry Worksheets
Unlimited random practice for grades 9–10 chemistry: moles ↔ mass (m = n × M) and concentration (mol/L ↔ g/L) using real molar masses for H₂O, NaCl, CO₂, O₂ and CH₄. Every answer is computed from exact periodic-table values and can be verified with the UnitFig converters.
Moles & Mass Worksheets — m = n × M (Free Printable)
Practice converting between moles and mass using molar mass: mass = moles × M. Covers H₂O, NaCl, CO₂, O₂, CH₄. Grade 9–10 chemistry. Letter-size print, answer key, free.
Open generatorConcentration Worksheets — mol/L to g/L (Free Printable)
Practice converting concentration between mol/L and g/L using molar mass. Covers H₂O, NaCl, CO₂, O₂, CH₄. Grade 9–10 chemistry. Letter-size print, answer key, free.
Open generatorWhy UnitFig chemistry worksheets?
Frequently Asked Questions
Are these chemistry worksheets tied to the UnitFig converters?
Yes. The molar-mass relationships (H₂O 18.015, NaCl 58.44, CO₂ 44.01, O₂ 32.0, CH₄ 16.04 g/mol) are the same values the UnitFig unit converters use, so students can verify any answer against the matching tool on the same site.
What grades are these for?
The two topics target grades 9–10 high-school chemistry: the mole and mass (stoichiometry) and solution concentration (molarity).
Are the problems generated or fixed?
Generated by the same deterministic engine as the math and physics sheets — every "New problems" click produces a fresh, duplicate-free set, and the build self-checks the answers.
Do they print on standard paper?
Yes, US Letter (8.5×11 in) with name/date lines and an optional answer key on the same page.
Last Updated 2026 | Chemistry answers use exact periodic-table molar masses and can be verified with the UnitFig converters.