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Alle Oberthemen / Chemistry / General / General Chemistry
22
(Chemical) Elements:
- basic materials, cannot be decomposed by any chemical reaction into simpler substances (but by physical methods)

- a type of matter composed by only one kind of atom, each atom of of a given kind having the same properties

- modern definition: elements are substances whose atoms all have the same atomic number

- 118 elements known, 85 natural occuring, 33 artificial
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Autor: Pfirsich
Oberthema: Chemistry
Thema: General
Veröffentlicht: 27.02.2010

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