A Coggle Diagram about Experiments (To test for water, To make a model of a filtration bed, To Show the presence of dissolved substances in a water sample, To demonstrate that water expands when frozen and To electrolyes water), Water Cycle (1
Heat from the sun causes water to evaporate from oceans. Respiration from animals and transpiration from trees gives off water, 2
As the water vapour rises it cools. Condensation produces clouds of tiny droplets of water., 3
Clouds rise when they meet land. Further cooling occurs and larger drops of water fall as rain and 4
Rivers flow to the sea. They dissolve substances from the rocks and receive sewage and industrial waste), Water Treatment (Stages of water Treatment, Untreated water cause death to millions of people because they can catch cholera and typhoid and Screening, Settling, Filtration, Chlorination and Fluoridation can be remembered using the mnemonic Silly Sean Follows Chelsea Football), There is a constant amount of water on earth. This is because water is being cycled and recycled. This process is described as the water cycle. , Water was first thought of as an element. Scientist Henry Cavendish proved this wrong by splitting water into it's two elements hydrogen and oxygen using a process called electrolysis. This involves electricity being sent through the water. A small volume of dilute sulfuric acid is added to the water to make it more conductive. A Hoffman Voltameter is used in this experiment. There is 2 hydrogen atoms to every 1 oxygen in water double the amount of oxygen is created in Hydrogen. 2H2O - 2H2 O2, Most liquids expand when heated and contract when cooled. Water actually expands when cooled. , Water clings to glass. As a result the surface of water in a narrow vessel is curved. This curved line of the water surface is called the meniscus and Desalination is when saltwater is heated and evaporated. The steam then rises, hits the glass ceiling in the building where it condenses into pure water.