BIOL 111 Lecture Notes - Lecture 2: Double Bond, Electron Configuration, Electronegativity
Document Summary
Chemistry: study that describes the behavior of matter ( what something is made of) Energy is that allows matter to move around. Atom: subatomic particles, in terms of mass and electrical charge. Atoms have an equal number of protons and electrons. First shell, second shell, third shell by number of electrons. Organizes elements according to their electron configuration. Hydrogen lacks a completed outer shell, reactive. 1 element + another element= a compound. Molecule: smallest unit of covalently bonded compoubd. Hydrogen would spend more time in the oxygen then they would in either of the electrons. Atoms equal or near equal in electronegativity. Water can dissolve large molecules such as proteins. Water molecule will dissociate as hydroxide ion. Acid will increase the hydrogen ion concentration. Base will decrease hydrogen ion concentration ph scale: quantifies hydrogen ion concentration (acidity) Smaller numbers ( increasing acidity, higher h+ concentration)
