Chemistry Dictionary Offline

Chemistry Dictionary Offline explains 15,700+ chemistry terms in clear, simple English — with formulae, a worked example and related terms. It is made for school and college chemistry students, B.Sc. and first-year university courses, pharmacy and engineering students, teachers, and anyone curious about the chemistry of everyday life. The whole chemistry dictionary works offline, without internet.

NEW IN 4.0.0
Every definition has been freshly written for this update, with chemical formulae in proper notation (H₂O, SO₄²⁻, CH₃COOH). 9,200+ new terms (marked NEW until you open them), 14 categories to browse, abbreviations and other names you can search (pH, EDTA, NMR, caustic soda…), quizzes, Exam Mode, flashcards, Term of the Day, dark mode and a brand-new design.

14 CATEGORIES OF CHEMISTRY TERMS
- Organic Chemistry — functional groups, named reactions, mechanisms, compounds
- Inorganic Chemistry — salts, oxides, coordination compounds, minerals
- Physical Chemistry — thermodynamics, kinetics, equilibrium, gases, solutions
- Elements & Periodic Table — every element, groups, periods and trends
- Atomic Structure & Bonding — orbitals, quantum numbers, hybridisation, VSEPR
- Analytical Chemistry — titration, chromatography, gravimetric analysis
- Spectroscopy — IR, NMR, UV-visible, mass spectrometry
- Biochemistry — amino acids, proteins, enzymes, carbohydrates, DNA
- Electrochemistry — cells, electrode potentials, electrolysis, batteries
- Nuclear Chemistry — radioactivity, isotopes, half-life, fission and fusion
- Polymers & Materials — plastics, rubber, alloys, ceramics, nanomaterials
- Industrial & Environmental — industrial processes, fuels, pollution, green chemistry
- Lab & Apparatus — glassware, bench techniques and laboratory safety
- Units & Constants — the mole, SI units, Avogadro and gas constants

FOR CHEMISTRY STUDENTS AND TEACHERS
Look up a term in seconds, read a short definition and an example that shows how it is used, then test yourself. Useful for school chemistry, board exam revision, entrance exam preparation, college and university chemistry, and practical lab work.

SEARCH THAT UNDERSTANDS FORMULAE AND OTHER NAMES
Type a term, part of a term, an abbreviation or another name: "ester" finds every ester, "NMR" finds nuclear magnetic resonance, "caustic soda" finds sodium hydroxide, US spellings such as "sulfur" or "aluminum" work too.

QUIZZES, CHALLENGE AND EXAM MODE
Two question types (term → meaning, meaning → term), a quiz for every category, a timed 10-round Challenge and Exam Mode with 50 questions in 25 minutes. Wrong answers go to My Mistakes so you can practise them again.

SAVE & REVISE
Save the chemistry terms you need and revise them with spaced-repetition flashcards.

TERM OF THE DAY
A new chemistry term every morning on the home screen and as a notification (can be switched off).

DAILY GOAL, STREAKS & BADGES
Set a daily goal, keep your streak, collect badges and see your accuracy in every category.

MORE
- 100% offline chemistry dictionary — no internet needed
- Listen to any term, also slowly
- Share a term as a picture with friends and study groups
- Light and dark mode
- Watch one short video to use the app ad-free for 15 minutes

Free, with ads. Questions or suggestions: gamesnapps4u@gmail.com

Recent changes:
What's new in 4.0.0:
- Brand-new design, icon and dark mode
- Every definition freshly written, with formulae and examples
- 9,200+ new terms (15,700+ in total), marked NEW
- 14 categories to browse
- Search by formula or other name (H2SO4, NaCl, caustic soda)
- Quizzes, Challenge and Exam Mode
- Save terms, revise with flashcards
- Term of the Day, streaks and badges