Chem 114 lecture 3

Chem 114 lecture 3 - Chem 114 lecture 3 10/09/2008 09:36:00...

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Chem 114 lecture 3 10/09/2008 09:36:00 Dalton’s new system It’s not that atoms can’t be cut into smaller pieces, it’s just that they’ll lose their  elemental properties (ie chemical behavior) once cut into anything smaller than  an atom. (atoms retain the properties of the bulk sample) In pure sample, all atoms identical Atoms of diff. elements differ in many ways, one way they differ is mass Atoms neither created not destroyed by chemical reactions, nor are their  masses altered Compounds are formed by the union of the atoms of the elements of which  they are composed. In modern chemistry Molecules are the smallest entity in a compound that can be isolated and still  have the same properties of the compound In a pure sample of a compound, all molecules are the same. The idea is that if you take an elemental substance and heat it up enough, a gas 
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Chem 114 lecture 3 - Chem 114 lecture 3 10/09/2008 09:36:00...

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