CHEM 1201 Chapter : Chapter 6
Document Summary
Basics of light: waves: light has wave-like characteristics, oscillates, peaks and troughs, wavelength, distance. Wavelength and frequency: wavelength, symbol: lambda, distance between two peaks, (or) distance between two troughs, units: nm, frequency, symbol: nu, rate at which peaks pass a certain point per second, units: hz (hertz) = 1s-1. Variations in light: wavelength and frequency are inversely proportional. Electromagnetic spectrum (em: the speed of light (c) does not change, changes in lambda and nu result in the em spectrum. Matter: quantized light: light energy interacts with matter, quantized = steps/increments. Light energy and matter: the sun produces every single wavelength of light (polychromatic, continuous spectrum, elements produce specific wavelengths of light. Element line spectra: can predict the (lambda) at which h emits light (1/lambda)= rh x [(1/ni2)-(1/nf2)] Electrons in matter: problems with bohr"s model, heisenburg"s uncertainty principle, momentum, position, only works for h, electrons do not stay in predictable circular orbits, cant determine two things at once (one is unknown):
