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The Periodic Table - Revision Notes The numbers in italics are the page numbers of where more information can be found in the revision guide.
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CD6 The Periodic Table Revision Notes The numbers in italics are the page numbers of where more information can be found in the revision guide. Elements and atom 6 Everything is made up of 100 different chemicals called elements . An element is a pure substance that is only made up of one type of particle called an atom. Each element has its own symbol on the periodic table. Eg Copper = Cu Oxygen=O An atom is made up of two parts. In the centre there is a small , heavy lump with a positive charge called the nucleus. On the outside small light ,negatively charged particles called electrons orbit around the nucleus. Nucleus (+ve) Electrons (-ve) An Atom Each element has two numbers on its symbol. The smaller number is the atomic number and tells you the number of protons in the nucleus of an atom of that element. The larger number is...
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