BIOL 1201 Lecture Notes - Lecture 1: Electronegativity, Covalent Bond, Chemical Formula
Document Summary
Scientific method: observation, generalization or model, predictions or hypothesis, test. What is life: characteristics of living systems, organization, energy use, development, reproduction, evolve, respond to environment. Like dissolves like (in terms of polarity) Atom- smallest unit of matter separable by normal chemical means that retains all of the properties of that element. The type of bond(s) within a molecule. Valence- the number of electrons that need to be gained or lost to fill the outer shell of electrons. Also predicts the number of bonds that an atom will form. Valence electrons- the electrons in the outermost shell. Form when atoms gain and lose or share electrons. They are the result of electrical attractions between atoms: ionic bonds. Form when atoms completely gain and lose electrons. No because they are all still sharing electrons. What determines the number and type of chemical bonds: number: valence, type: electronegativity.
