Slide 1 COUNTING UNITS FOR…….. atoms Slide 2 These slides will help you navigate the next section of the Counting Units Lab – Experiment #5/Unit 2 (B): Mole System.…
The Discovery of Isotopes Francis William Aston and Antoine Becquerel An atom consists of a nucleus (of protons and neutrons) electrons in space about the nucleus. The Atom…
Elements, Atoms, and Compounds The Language of Chemistry CHEMICAL ELEMENTS - pure substances that cannot be decomposed by ordinary means to other substances. Sodium Bromine…
ATOMS AND ELEMENTS Radioactivity One of the pieces of evidence for the fact that atoms are made of smaller particles came from the work of Marie Curie (1876-1934). She discovered…