EAS100 Lecture Notes - Lecture 16: Cubic Centimetre, Bravais Lattice, Geochemistry
10 Oct 2018
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Document Summary
Water molecule does not have a formal charge, but it does have polarity there are areas of greater electron density. Electron density is focussed around the oxygen, making this end more negative compared to the more positive hydrogens: this polar nature allows other compounds and minerals to dissolve, also related to surface tension! Phases of water: 3 phases of water on earth, liquid water. Ice: water vapour, to move from one phase to another, energy must be released or absorbed, resulting in melting and vaporization, solid directly to water vapour is called sublimation. Ice is not only a crystal, it is a mineral: crystal lattice structure, does not contain carbon, therefore is non-organic, only includes naturally occurring ice, not man-made! Density of ice is considered to be 1 (1 gram per cubic centimetre) Because water expands when it freezes instead of shrinking like most substances:
