Discover all 118 elements, the building blocks of matter that make up the entire universe, in this pocket encyclopedia. Learn about all the main elements of the periodic table, organized into chapters according to their group, including alkaline earths, lanthanides, and noble gases. Every important element - from hydrogen to gold and oganesson (element 118) - is presented here. Each entry includes a photograph of the element in its natural state or in use, as well as its discovery date and atomic information as found on the periodic table. Additionally, there are impressive full-page photos showing the elements like you've never seen them before - perhaps inside machines you cannot normally explore or in stunning macro photography that reveals microscopic details invisible to the human eye. The Pocket Eyewitness series is perfect for all children, from hesitant readers who can easily grasp the key points to future Marie Curies and Louis Pasteurs who want to learn more about the planet's most fundamental particles.