1001 Space Earth Nature History Human World Science and Technology Chemistry Materials Force and Energy Heat and Light Electricity and Magnetism Industry Machines Electronics and Computers Cars and Trucks Railways Ships Aircraft Fishing and Agriculture Undersea Exploration

Choose a Page:How does salt dissolve in water?Where do dyes come from?What is the difference between a m...What is a molecule?How big is an atom?How does film processing work?How do detergents work?*How many elements are there?*Which is the most common element?What is inside a fire extinguisher?What is a polymer?What are acids used for?Are tyres made from natural rubber? How many elements are there? There are about 106 known chemical elements. Just over 90 of them occur naturally on earth. The remainder have been made artificially by scientists. About three quarters of all elements are metals. The rest are gases and five are non-metallic solids. The elements can be studied by chemical analysis   Previous: Back Book: 1001 Section: Science and Technology Chapter: Chemistry