Periodic Table Master vs Globe Quiz 3D

Periodic Table Master is the ultimate reference and learning tool for anyone curious about the elements that make up our universe. Completely free — no ads, no accounts, nothing locked behind a purchase. There's an optional tip jar if you'd like to support development. Explore the Full Periodic Table Browse all elements in a beautifully designed, color-coded periodic table. Each element is grouped by category — alkali metals, noble gases, transition metals, and more — making it easy to spot patterns and relationships at a glance. Pinch to zoom in for detail or out for the full picture, and tap any element to dive deeper. Property Heat Map Tap the thermometer icon to recolor the entire table by any numeric property — electronegativity, atomic radius, density, melting point, boiling point, thermal conductivity, ionization energy, atomic mass, or electron affinity. A blue-to-red gradient reveals trends and outliers across the periods instantly. Elements with no data for a property appear gray. Tap again to return to category colors. Detailed Element Profiles Every element has a full profile page covering atomic mass, density, melting and boiling points, electron configuration, oxidation states, atomic radius, natural occurrence, biological role, ionization energies, and more. Over 80 elements include a real-world image showing exactly what the element is used for — from copper piping to green fireworks, solar panels to jet engines. Test Your Knowledge Challenge yourself with a timed quiz covering all 118 elements. Choose your duration in Settings — 1, 2, 3, 4, or 5 minutes, or play with no timer at all. Score +1 for a correct answer, −1 for wrong, and 0 to pass. Questions span symbols, names, atomic numbers, categories, periods, blocks, electron shells, oxidation states, biological roles, real-world uses, and crustal abundance. Wrong answers are penalised, so accuracy matters. Beat your high score — tracked separately for each duration — and work towards a perfect reaction. Search Instantly Looking for a specific element? Use the built-in search to find any element by name, symbol, or atomic number. Matching elements light up on the table while others fade away, making it effortless to locate what you need. Beautiful and Informative Color-coded element cells by category Property heat map to visualize trends across the periodic table Optional two-letter category labels for each cell — ideal for color-blind users Bohr model diagrams showing electron shell structure Spectral line images for elements that produce them Ionisation energy charts Electron configuration with Unicode superscripts Crustal abundance data for over 80 elements Works Completely Offline All content is built into the app — no internet connection is ever required. There are no subscriptions and no data collected or shared. Whether you are a student revising for exams, a teacher looking for a classroom reference, or simply someone who has always wondered what tungsten is used for — Periodic Table Master has you covered.

Geography quiz on an interactive 3D globe — learn countries, capitals & flags in a whole new way. Globe Quiz 3D is the first geography game played directly on a rotating 3D Earth. Rotate the world map with your finger, tap countries, and test your knowledge of nations, capitals, and flags — all on a beautifully rendered three-dimensional globe. Unlike flat map quiz games, Globe Quiz 3D brings geography to life. Correct answers are highlighted on the globe in green. Wrong answers in red. Watch your progress build across continents as you play. WORLD QUIZ Challenge yourself with countries, capitals, and flags — play the whole world or filter by continent. Africa, Europe, Asia, Americas, Oceania — each sorted and organized for a smooth learning experience. US STATES QUIZ Go beyond world geography. Test your knowledge of all 50 US states, their capitals, and state flags on a dedicated United States map. SMART HINT SYSTEM Stuck on a question? Activate a hint to highlight two possible countries — pick the right one. Earn bonus hints by getting 3 correct answers in a row. Strategy meets geography. CORRECTION ROUND Made mistakes? No problem. After completing a quiz, enter a correction round to replay only the questions you got wrong. Green stays, red gets a second chance. REVIEW MODE After your final round, explore the globe with all your answers visible — green and red borders on every country. Tap any country to see its name. A personal atlas of what you know and what to study next. BROWSE MODE Not in the mood for a quiz or exam? Simply explore countries and US states on the 3D globe with key facts and links to Wikipedia for deeper learning. KEY FEATURES — Interactive 3D globe with smooth orbit controls — Country & flag recognition on a real world map — World quiz: countries, capitals, flag quiz — US states quiz: states, capitals, state flags — Play by continent or whole world — Hint system with earning mechanics — Correction rounds for wrong answers — Review mode to study your results — Browse & explore mode with Wikipedia links — Track your best scores locally — No account needed, educational geography game — No internet required to play Globe Quiz 3D is the perfect geography game and exam prep tool for students, travelers, trivia lovers, and anyone who wants to master world geography and US states. Download the best 3D globe quiz and start learning today.