Periodic Table of the Elements by WebElements Pictures, stories, and facts about the element Hydrogen in the Periodic Table Actinolite asbestos. The name "asbestos" used to mean a wonder-material, an insulator without equal and a strengthening fiber so cheap and strong it was used in building materials worldwide. Today the name means nothing but death and ruin. Asbestos had been used so widely and for so long that it must have seemed beyond credibility when evidence first started appearing that it might be harmful. The answer lies in its shape. The fibers are not just fine, they are ultra-fine: The ends of the natural fibers taper down to molecular sharpness, with a tip that is literally no more than a few atoms across. The ability to touch, and damage, DNA makes asbestos fibers potent carcinogens: Remarkably, unlike virtually all other carcinogens, they cause cancer purely mechanically, not chemically or by radiation. In principle asbestos could cause cancer anywhere in the body, but it's the lungs that are most vulnerable. The most serious disease caused by asbestos is mesothelioma, a form of cancer.
The Elements by Theodore Gray My book The Elements is based on photographs I've been collecting at my website periodictable.com for many years. The website includes not just pictures, but also more detailed descriptions than we could fit in the book, and most importantly, it includes full 360-degree rotating videos of almost all the objects. You really won't find this kind of resources anywhere else for any other subject, so please enjoy. If you don't have the book yet, please don't think this is page is a substitute for the real thing. For the convenience of people who have the book, I've listed all the samples found on each page in the book, so you can easy look them up. Click on a page icon below to get a list of the samples on that page. Sort pages: By Atomic Number | Alphabetically | Text Listing
Science Paper Model - 3D Periodic Table Free Papercraft Download | PaperCraftSquare.com This science paper model is a three-dimensional (3D) Periodic Table, designed by soilshop. If you are a chemistry teacher, it might be helpful in your teaching. A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number. Standard form of the periodic table. Although precursors exist, Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table. All elements from atomic numbers 1 (hydrogen) to 118 (ununoctium) have been discovered or synthesized. You can download this science papercraft here: Science Paper Model - 3D Periodic Table Free Papercraft Download For this paper model, we recommend that you use the material (Paper, Paint, Glue, etc.) to make. If you like this papercraft, please share it to others, thanks!