Molecular weight calculator

This is a small tool suitable for middle school, high school and college chemistry learning. Users can use the unique periodic table keyboard with the numeric keyboard to enter the chemical formula of the compound and calculate the molecular weight of the compound. They can also use this tool to learn and understand the basic characteristics of chemical elements. Main functions and features: 1. Provides a unique periodic table keyboard to help users enter chemical formulas 2. Users can also query and enter chemical elements through the search box 3. For hydrates, click on the number of the water molecule to modify the content contained in it. The number of water molecules 4. Long press a chemical element key to display the basic properties of the element 5. Provides the English pronunciation of all chemical elements 6. Provides the Chinese and English names and chemical formulas of common ions, acids, and bases, as well as their English Pronunciation 7. The "Element Find" game function makes students more interested in learning the periodic table of chemical elements.