World Of Elements vs Elements

World Of Elements turns chemistry into a game. Explore the periodic table, mix substances in a virtual laboratory and test yourself in mini games. Everything is free, with no ads and no sign-up. LABORATORY • 68 real reactions and 83 substances • Pick up to three substances and a condition: heat, spark, light, catalyst or electricity • An animated flask: flames, bubbles, precipitates, smoke and flashes • Every reaction comes with a balanced equation, what you would see, and a fun fact • Reaction products land on your shelf so you can go further • A discovery journal with three levels and hints EXPERIMENTS • Flame colors: ten elements and a “guess the metal” game • Indicators and pH: lemon juice, soap, baking soda and 13 more liquids, five indicators • Balance the equation: 42 tasks with a live atom counter PERIODIC TABLE • All 118 elements with descriptions, properties and facts • Mark what you have learned and track your progress PUZZLES AND GAMES • 46 molecule-building puzzles, from water to hemoglobin • Quizzes, memory game, sorting and matching • Daily challenges, points and achievements FOR THE WHOLE FAMILY • Several profiles with age groups • Difficulty adapts to age • Ten color themes, light and dark • English and Russian PRIVACY The app collects no data and works offline. Your progress stays on your device. The experiments in the app are a simulation. Do not repeat them at home without adults and protective equipment.

Elements turns the periodic table into short quiz rounds you can finish in a couple of minutes — on the bus, between classes, or the night before an exam. Ten questions per round. Every answer is shown immediately, and anything you miss goes to your review list so you drill the elements you actually get wrong instead of the ones you already know. FOUR WAYS TO PRACTISE - Symbol to name: see Fe, pick Iron - Name to symbol: see Iron, pick Fe - Atomic number: which element is number 26? - Element groups: metal, halogen or noble gas? THREE DIFFICULTY RANGES Start with the first 20 elements, move up to 36, then take on all 118. THE WHOLE TABLE Tap any element to see its atomic number, period, group and category. Categories are colour coded, so the shape of the table makes sense at a glance. WORKS ANYWHERE No account, no sign-up, no internet. The app makes no network requests at all, so it works in airplane mode and in an exam room. Your best score and your missed elements stay on your device — the App Store privacy label reads "Data Not Collected" because nothing is collected. FREE AND PAID The free version covers the first 20 elements in symbol-to-name mode, plus the full table and mistake review. One payment unlocks all 118 elements and all four quiz modes. No subscription, ever. Built for students, teachers and anyone who wants the table in their head rather than on a poster.