Rules and style conventions for writing SI units and quantities shortened to a single page. General principles for the writing of unit symbols and numbers were first given by the 9th CGPM (1948, Resolution 7). Compliance with these rules and style conventions, the most important of which are presented in this document, supports the readability of scientific and technical papers.
Do you need something to mark your books with? The 'Periodic table' bookmark which comes with basic rules for writing chemical equations will do it in a fun and educative way.
The PDF file contains three blank periodic tables useful for student work. One contains only symbols and you need to write in the names of the elements, in the other the situation is reversed. The third one is completely empty. - (New on periodni.com)
The black and white version of the periodic table is prepared for prints in Portable Document Format (PDF). The atomic weights of the elements are rounded to 5 significant figures. - (New on periodni.com)
The color version of the periodic table is also available for printing in the Portable Document Format (PDF). The colors denote the element groups. - (New on periodni.com)
Crystal systems are the easiest to understand when you hold them in your hand. Craft 3D paper models of seven basic crystal systems (cubic, tetragonal, orthorhombic, hexagonal, rhombohedral, monoclinic and triclinic).
Large educational poster "Qualitative inorganic analysis: Scheme for the separation of cations" for your laboratory wall.
The chemistry images collection includes more than 250 images of laboratory glassware and apparatus, structural formulas, crystal systems, graphs, and more. You can download and use any image from my site and use it in your own work, either personal or commercial. - (New on periodni.com)
The Periodic Table is also available as a desktop background (wallpaper). Choose a size according to the resolution of your monitor. You will achieve the best result if you center the image (which is a transparent png) on the desktop and then surround it with a color of your choosing. File name and image dimensions: