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? What is a molecule? A molecule is the smallest particle of a chemical compound that can take part in a reaction. Most molecules consist of two or more atoms held together by chemical bonds. Some molecules contain thousands of atoms. water molecules   Previous: Back Book: 1001 Section: Science and Technology Chapter: Chemistry