BIO 202 Study Guide - Midterm Guide: Electron Configuration, Hydrogen Bond, Electronegativity
7 Aug 2018
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Chapter 2: define atom, element, molecule, compound, an atom is the smallest unit of matter i. Cannot be broken down: an element is categorized by a specific type of atom i. ii. An element is distinguishable by its atomic number. Pure substance, unpolluted by other atoms of another kind: compound i. ii. Atoms that are fixed in a definite ratio. A compound is always a molecule, but a molecule isn"t always a compound, since you need different types of atoms to make up a compound. Know what orbitals and shells are and the understand the connection between electron configuration and reactivity. Electrons are shared equally: polar covalent bonds i. ii. Electrons are not shared equally - concentrated more to the electronegative atom: hydrogen bonds i. ii. iii. Formed from an attraction from h bonded to an electronegative atom to another electronegative atom - nof.
