Atomic structure

Discovery Science: Matter – Atoms: the Building Blocks of Nature

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Earth Science: Matter – Atoms: the Building Blocks of Nature The first step in the development of modern chemistry was the recognition that atoms existed. Today it is known that every element consists of a specific kind of atom. At the start of the 19th century, John Dalton. a science teacher from Manchester, England, promoted … Read more

Pocket Genius Science: Matter and materials – Elements

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Facts At Your Fingertips: Matter and materials – Elements A chemical that is made up of atoms of just one type is known as an element. Although all atoms are made of the same basic parts—protons, neutrons, and electrons—not all atoms are the same. It is the number of these parts that gives the atom—and … Read more