Vaporization

... explain also a difference between a qualitative change and quantitative change. It shows that each kind of qualitative change, like for example vaporization of water, is some form of quantitative change. ECTMO 579877 (06. 2008) [ * There is a possibility to use both models on the ground of sociology. ...

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... by our noses which ain't cyclic...i just wanted to know how was it decided which ones to be choosen as the chemicals of sense ? IS it due to vaporization /boiling temp.s & thus availibility near a particular source..? A mate..? hrushikesh

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