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#5 Smallest part of an element

#5 Smallest part of an element. Define what an element is Elements are made up of atoms that all share the same physical and chemical properties. The atoms are then made up of subatomic particles called protons (+), neutrons (0 charge), and electrons (-). #9 Subscripts say?.

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#5 Smallest part of an element

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  1. #5 Smallest part of an element • Define what an element is • Elements are made up of atoms that all share the same physical and chemical properties. The atoms are then made up of subatomic particles called protons (+), neutrons (0 charge), and electrons (-).

  2. #9 Subscripts say? • Subscript is the number below the atomic symbol of a compound’s chemical formula • Tells you how many of that element is in 1 compound

  3. #11 Ratio of compounds • 1 Nitrogen atoms • 2 Oxygen atoms • 2 elements will chemically combine to form nitrogen dioxide or mononitrogen dioxide NO2

  4. #18 separation of H.M. • Physically mixed together (physical change) • Evaporation • Boiling • Magnetic • Melting • Straining

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