Chemistry - wikipedia, Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter. chemistry includes topics such as the properties. Elements human body - chemistry: chemistry, Question: what are the elements in the human body? answer: most of the human body is made up of water, h 2 o, with cells consisting of 65-90% water by weight.. Representative elements periodic table | chemistry, The metallic elements which are found on the left side and in the center of the periodic table are known as representative elements.
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