BIOL 1201 Chapter : BIOL 1201 Basic Chemistry 8 26
Document Summary
We are going to begin by using a reductionist approach. Scale of nature: what are the sizes of biologically important structures: check pre-lecture notes , log scale. Solubility: what determines solubility, "like dissolves like" In terms of polarity: polar compounds are soluble in polar solvents and vice versa. Bohr model: this model has electrons moving in orbitals or shells around the nucleus. Chemical bonds: form when atoms gain or lose or share electrons, result of electrical attractions between atoms, merely electrical attractions (positive and negative) If they are shared equally, called pure covalent bond or non-polar covalent bond: when the atoms are the same diatomic molecules. Are covalent, polar covalent, and ionic bonds really different bonds: position of the electrons in time, 100% around one nuclei: ionic bond, 50% around each nuclei: non-polar covalent bond, 55% (approximately) around one nuclei: polar covalent.
