Minooka - Elements Part 2

Atoms and Elements Chemical Foundations

Atoms and Elements ,[object Object],[object Object]

Postulates ,[object Object],[object Object],[object Object],[object Object],[object Object]

Atoms have parts ,[object Object],[object Object]

Elements ,[object Object],[object Object]

Most Abundant Elements on Earth

Nitrogen gas contains N 2 molecules.

Oxygen gas contains O 2 molecules.

Representation of NO, NO 2 , and N 2 O.

History of the discovery of the atom ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

1770’s ,[object Object],[object Object],[object Object],[object Object]

1799 - Proust ,[object Object],[object Object],[object Object]

John Dalton ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Key idea - Dalton’s Atomic Theory ,[object Object],[object Object],[object Object]

Dalton’s Atomic Theory Con’t ,[object Object],[object Object]

1870’s ,[object Object],[object Object],[object Object]

Schematic of a cathode ray tube.

1897 - Sir J.J.Thompson ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Plum Pudding model of an atom.

1886 - Goldstein ,[object Object],[object Object],[object Object]

1909 - Ernst Rutherford ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Results of foil experiment if Plum Pudding model had been correct.

Rutherford’s model ,[object Object],[object Object],[object Object],[object Object]

1913 - Niels Bohr ,[object Object],[object Object]

Bohr’s Atom ,[object Object],[object Object]

Bohr’s atom con’t ,[object Object],[object Object],[object Object]

All models have problems ,[object Object],[object Object]

We now know… ,[object Object],[object Object],[object Object],[object Object]

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