Periodic Table Quiz - Online Learn Element Symbols & Names
Quiz yourself on element symbols, names, and atomic numbers. Multiple modes: element to symbol, symbol to element. Score tracking. Great for chemistry students.
UD5 Toolkit
Quiz yourself on element symbols, names, and atomic numbers. Multiple modes: element to symbol, symbol to element. Score tracking. Great for chemistry students.
An interactive periodic table of elements with detailed properties, electron configuration, and images. Excellent educational resource. All static data.
Find the correct regulator pressure to achieve a desired carbonation volume in your home soda keg. Spritzig or flat.
Calculate coffee grounds and water needed for any brew method (SCA golden ratio). Adjust strength. Convert grams to tablespoons. Local only.
Convert temperature between Celsius, Fahrenheit, and Kelvin instantly. Simple slider and input fields. Useful for travel and science homework.
Enter a location and date to find the exact time of solar noon, sunrise, and sunset. Astronomy tool.
Use the golden ratio for coffee brewing. Enter water volume or coffee weight to instantly get the right amount of grounds for your preferred strength.
Generate a random sequence of button presses that looks like a retro game cheat code. Totally useless, totally fun.
See a random color and type its name. Score based on accuracy. Fun for designers. Local.
Combine two random elements and get a surprising result. Inspired by Little Alchemy. Infinite ideas. All local.
Create a random video game premise with a setting, protagonist, and twist. For game jams and creative writing. All local.
Stuck in a word scramble game? Enter the scrambled letters and get a list of possible English words. Builtβin dictionary. All local.
Try to draw a perfect circle freehand. Score based on roundness. Fun and addictive. No data sent.
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Play the extended 5βgesture version against a CPU. Rules explained. Score tracking. A geek classic.
Practice CSS selectors by targeting plates on a virtual restaurant table. 30+ levels. Perfect for beginners.
A replica of the famous Flexbox Froggy game: solve alignment puzzles by writing CSS. Progress saved locally. Fun frontend learning.
Generate random Scattergoriesβstyle lists with a random letter and 12 categories. Great for online game night.
Spin a wheel or randomize to get a chemical element with fascinating facts and description. Great for kids.
Type a word and see which letters can be spelled with atomic symbols (e.g., Co In = CoIn). Fun ciphers.
Two players type the same text on the same keyboard (WASD vs Arrow zones) and race to finish first. Fun classroom game.
Recreate the target CSS linear gradient by adjusting stops and colors. A unique game for frontβend developers to master gradients.
Given an RGB value, pick the matching color square. Multiple difficulty levels. Improve your color perception. Fun for designers.
Play the Pig dice game: roll to accumulate points, but a 1 ends your turn. First to 100 wins. Simple hotβseat local game.
The original arcade Pong recreated in HTML5. Play against AI or local twoβplayer. Score up to 11 and win. Pure retro fun.
Help the bird fly through pipes without touching them. Click or tap to flap. Track your high score in localStorage. Classic timeβwaster.
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Hit the popping moles as fast as you can before they disappear. Increasing difficulty. Great for handβeye coordination. Browser only.
Classic Hangman with random English words. Visual hangman drawing, keyboard support. Guess letters and save the stickman. Completely local.