CHEM 1070 Lecture Notes - Lecture 4: Ernest Rutherford, Density, Lightning
14 Jun 2021
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The sceptical chymist (1661) - the birth of chemical analysis. Defined elements as pure substances that cannot be chemically decomposed into. A new system of chemical philosophy (1803) law of multiple proportions combined ideas of boyle and lavoisier formalized atomic theory published a table of relative atomic weights (hydrogen being 1) Dalton"s atomic theory: atoms are the smallest piece of all elements, atoms are tiny indivisible and indestructible particles, atoms of a given element have the same mass & properties. Atoms of different elements have different masses and properties: atoms combine in simple whole-number ratios to form compounds, chemical reactions reassemble atoms to form different compounds. A fundamental property of matter observed since ancient times. An alien" student of j j thompson. Set out to experimentally prove the plum pudding model. Experimental evidence by ernest rutherford disproved the plum pudding model. Positively charged particles ( -particles) were shot at a thin gold foil.
