Periodic Table: 118 Elements

Explore the building blocks of matter with Periodic Table: a visual chemistry reference with all 118 elements, available offline after installation. Now it is also a complete chemistry companion: 182 handbook topics, 14 step-by-step solvers, endless practice and an AI tutor that runs on your iPhone. START WITH THE CLASSIC TABLE Browse 18 groups and 7 periods, with separate lanthanide and actinide rows. Tap any element to open its card, or move and zoom the table to explore. SEE THE ESSENTIALS AT A GLANCE Large symbols, clear numbers and color-coded categories make element cards easy to scan. Explore atomic mass, protons and electrons, electron shells, electron configuration, electronegativity, density, melting and boiling points, and position in the table. UNDERSTAND VALENCE Compare typical valences with signed oxidation states and selected compound examples. Valence information covers 80 elements, with 125 examples and notes explaining the limits of the data. A SOLVER THAT SHOWS ITS WORK 14 step-by-step solvers take your own formulas and numbers: • balance any equation, including ionic ones, with the full system of atom balances • electron balance for redox reactions: oxidation states, half-reactions, oxidizer and reducer • oxidation states in any compound or ion • molar mass and element percentages, empirical and molecular formula from percentages • calculations from an equation, limiting reagent, ideal gas law • mass fraction, molarity, dilution and mixing, pH of acids and bases • electron configuration with orbital diagrams, radioactive decay EVERY TOPIC IN ONE PLACE Basic concepts, the mole and calculations, atomic structure, the periodic law, chemical bonding, classes of inorganic compounds, reactions and redox, thermochemistry, rates and equilibrium, solutions, electrolytes and pH, electrochemistry, metals, nonmetals, organic chemistry from hydrocarbons to proteins and polymers, and the lab. PRACTICE WITHOUT END 15 practice topics generate new problems every time — molar mass, moles and gas volumes, oxidation states, balancing, Le Chatelier, pH, hydrolysis, organic naming and more — with instant feedback and an explanation after each answer. PERIODIC TABLE PRO (yearly or monthly subscription with a free first week, or a one-time lifetime purchase) • Virtual lab: combine atoms from the periodic table and see what you get — an animated molecule and a card for each of nearly 600 substances, from hydrochloric acid and ethanol to aspirin and nylon: what it is, where it is used, how it is made and how dangerous it is. For formulas outside the database, the on-device AI suggests what the substance could be. • AI tutor that runs entirely on your iPhone with Apple Intelligence: ask in your own words, get step-by-step explanations; the app double-checks equations and molar masses with its exact engine. Nothing is sent to the internet. • Problem scanner: photograph an equation in your notebook or textbook and balance it in one tap. • Unlimited practice sessions. The handbook, tables and all solvers stay free forever. CHOOSE YOUR LANGUAGE Use English, Spanish, Arabic, French, Hindi, Thai or Russian. English is the default; your language choice is saved on your device. Arabic supports right-to-left reading while chemical formulas keep their standard direction. PRIVATE BY DESIGN No accounts, no ads, no tracking, no analytics. Everything works offline. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; payment is charged to your Apple ID after the free week. Manage or cancel in App Store settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ultim8digital.github.io/periodic-table/privacy.html