9 - --------An electron can jump up from a lower to higher...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Bohr Model of the Atom (1886-1962) - Every atom consists of a nucleus plus electrons , which can be in different energy states. - The farther the electron is from the nucleus, the higher its energy. - Freaky Fact: Electrons can’t be in any energy state. - Allowable energy states are “quantized” - The Bohr Model of the atom imagines the electrons in “orbital’s” - It is a simple but useful model Atoms & Light - Light interacts with atoms by exchanging energy with electrons - An electron in a high energy level can “jump” down to a low energy level. - It loses energy, and emits of a photon of light. - The energy of this photon equals the energy lost by the electrons. - This photon equals the energy lost.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: --------An electron can jump up from a lower to higher energy levels-But, it needs energy to do this.-A photon of light can provide the energy.-However, not every photon can do the trick.-If the photons energy matches the energy difference Between the levels, the photon will be absorbed,-Otherwise it will fly away (Electrons absorbs a photon, causing it to jump to a higher energy level) Because electrons exist only at specific energy levels, photons are emitted & absorbed with specific energies. Absorption Spectrum Emission Spectrum Photons of different wavelengths have different energy. So atoms absorb or emit only certain wavelengths (or colors) of light...
View Full Document

Ask a homework question - tutors are online