Pure substance and periodic table
September 27, 2021
Pure substance and mixtures
Solid ------ Liqid (must add energy so the particles vibrate/translate/rotate faster
Liquid ------ Gas (energy must be added)
When there is only one thing present in a matter = pure substance
Examples of pure substance: water, gold, copper, nickel,
On Earth, there are about 250 pure elements, listed in the periodic table
All pure substances in periodic table: Some are solids (gold, silver, copper) and some are gases (hydrogen, oxygen, helium). One liquid pre substance (mercury)
- periodic tables, elements
- structure of atoms, protons, neutrons and electrons
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