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? Which is the most common element? The most common element on earth is oxygen. It makes up 47 percent of the rocks and 21 percent of the atmosphere. The water in the oceans is 89 percent oxygen. However, the most common element in the universe is hydrogen. The water in the oceans is 89 percent oxygen   Previous: Back Book: 1001 Section: Science and Technology Chapter: Chemistry