BIO SCI 93 Study Guide - Comprehensive Final Guide: Autophagy, Epigenome, Intron
1 Dec 2016
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BIO SCI 93 Full Course Notes
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Maximum 4 hydrogen bonds that a water molecule can have at a given time. One each from hydrogen atoms and 2 from each oxygen atom. 96% of living matter is carbon, oxygen, nitrogen and hydrogen. Trace elements like iron, iodine, zinc and copper. Molecule- 2 or more atoms combined compound- molecule made up of 2 or more elements in a xed ratio. Nacl- table salt, sodium, chloride, 1:1 ratio sodium is a hard crystal chlorine is a gas. Together they form salt crystal which has completely di erent properties than the original elements that formed this compound. Hydrogen bond- the h atoms forms one covalent bond and a second weaker bond. Oxygen atom pulls shared electrons more because it is electronegative. Sodium gives up 1 electron to chlorine completes outer shell sodium becomes cation and chlorine becomes anion, this how the bond forms. Molecular structure and chemical properties of water composed of h and o.
