Identifying Elements by Color SpectRoscopy Identifying Elements by Color
Periodic Table: To Date Atomic Number – and Atomic Mass Increase left to right
Periodic Table: To Date Etc. Electrons in Valence Shell Defines Chemical Properties
Periodic Table: Today Electrons in ALL Shells Defines Chemical Properties
Element Identification: Emitted Light Each element emits a characteristic pattern of bands of light. These patterns of bands are used to identify the elements
Emitted Light: Why? Electrons around an atom can be found in different “shells” Each shell has its own energy level Close to the nucleus = low energy Far from nucleus = high
Emitted Light: More… When “energized” electrons can jump up to higher energy level shells When they move back down they give off some energy as light
Emitted Light: More… Low energy light waves = long wave lengths = close to nucleus High energy light waves = short wave lengths = farther from nucleus
Emitted Light: Colors! Let’s EXPLORE!! Different wavelengths make different colors ! Let’s EXPLORE!!