2. CHEMICAL AND PHYSICAL PROPERTIES. Manganese is very similar to iron in its physical and chemical properties, the chief difference being that manganese is harder ...
Carbon has been known since ancient times in the form of soot, charcoal, graphite and diamonds. Ancient cultures did not realize, of course, that these substances ...
Mercury is a chemical element with symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum (/ h aɪ ˈ d r ɑr dʒ ər ...
Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in ...
Definition of algae and different types of algae ... Algae. The word algae represents a large group of different organisms from different phylogenetic groups ...
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Actinium, Chemical Element , Aluminum, Chemical Element , Americium, Chemical Element , Antimony, Chemical Element , Argon, Chemical Element , Arsenic, …
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