CHEM 1A Study Guide - Midterm Guide: Pauli Exclusion Principle, Formal Charge, Sodium Chloride
Document Summary
Mass and moles: m = m(proportionality constant g/mol) x n(mol) Mass and volume: m = p(density mol/l) x v(liters) E is released when bonds are created. Ke increases when making bonds bc pe decreases. Empirical: simplest integer ratios, comes from relative masses in mol. Molecular: true # of atoms in molecule. V = speed (m/s), property of the medium. Fancy v = frequency (1/s or hz) T = period (sec) = fancy v^-1. Electromagnetic spectrum [c = lambda x fancy v] Visible light: 420-700 nm wavelength, v = c = 3 x 10^8. Re-emitted - new freq, can sometimes see. As temp increases, ke increases, and e overall, so wavelength changes. As the wavelength 0, classical says. Energy of a photon: e = h x freq. Emission of e-s from a surface due to absorbing radiation. Shine uv on metal and measure (excess) ke. Work function (v0): e required for e- removal.
