化楽

KAGAKU is a visual education app that lets you learn about the workings of chemistry by "seeing" them.

This is the 10th installment in the series, following Math, Physics, Electron, Waves, Heat, Stars, Light, Quantity, Flow, and Proof. This time, the theme is "Chemistry." You can learn 10 areas from high school to introductory university level all at once with beautiful animations and interactions.

【10 Features】

▶ Periodic Table
All 118 elements are color-coded by category. Tapping an element instantly displays details such as atomic number, atomic weight, electron configuration, and electronegativity.

▶ Atomic Structure
The Bohr model is animated. You can observe how electrons orbit their shells for 13 representative elements (H to Cu).

▶ 3D Molecules
Display 12 molecules, including water, methane, ammonia, carbon dioxide, ethanol, benzene, ethylene, acetylene, and glucose, in 3D using ball-and-stick models. Freely rotate by dragging, and automatic rotation is also possible.

▶ Chemical Bonds
Visualize three types of bonds: ionic, covalent, and metallic. Automatically determine bond type based on electronegativity differences and compare the differences in electron movement with animations.

▶ Equation Balancer
Six reactions: methane combustion, iron oxidation, water production, Haber process, photosynthesis, and neutralization. Display coefficients with a single button click and simultaneously check the number of atoms on both sides.

▶ Flame Test
Reproduce the flickering flame colors on a burner for seven elements: Li, Na, K, Ca, Sr, Ba, and Cu. Emission spectrum (wavelength nm) is also displayed simultaneously. Understand the principle of fireworks.

▶ Acid-Base / pH
Real-time visualization of titration curves for strong acids and strong bases. You can switch between color changes for BTB, phenolphthalein, and methyl orange to visualize the changes. The pH value is also displayed according to the titration volume.

▶ Electrochemistry
Animation of the Daniell cell's operation. Visualize the flow of electrons through the external circuit, the movement of Zn²⁺ and Cu²⁺ ions in the solution, and the electromotive force of 1.10 V simultaneously.

▶ Gas Laws
Particle simulation of PV=nRT. You can freely manipulate temperature, volume, and particle number to intuitively understand the relationship between Brownian motion and pressure.

▶ Organic Chemistry
A structural guide to alkanes, alkenes, alkynes, aromatics, and functional groups (-OH, -NH₂, carbonyl). Learn about the differences in properties by rotating 8 representative molecules in 3D.

【Features】
• Formula explanation sheets included for all functions
• Real-time display of formulas and numerical values
• Japanese / English support
• Dark mode / Light mode support
• Intuitive and beautiful UI
• Ads are limited to banners at the bottom of the screen

【Recommended for】
• High school chemistry students
• Those who want to intuitively understand chemical reactions and molecular structures
• Teachers who want to use it as teaching material
• Anyone who wants to rediscover the fun of chemistry