BIOL 1201 Chapter : Test 1
Document Summary
Biology 1201 wischusen: make observations, attempt to discern patterns, assume that the future is like the past. Scientific method: observation, generalization of model, predictions/hypothesis, test, ***cycle repeats** Goal of science is to get to a good model, accurate. Limit of science - must have an observation present: phenomenon must be observed. Isotopes = variant of an atom, having a different atomic mass (neutrons: valence: the # of e- that need to be gained or lost to fill the outer shell of electrons. Jee 2: predicts the # of bonds that an atom will form, electrons in the outermost shell, bohr"s model, k shell - inner most shell, 2 electrons. Ionic bonds: atoms completely gain and lose electrons - stealing. Strongest bonds when dry - attraction always present: nacl, na - 11, cl -17, chlorine takes electron from sodium - now stable with an ionic bond - Cl -1, na+1: covalent bonds, atoms share electrons, h2.
