Identifying Elements by Color

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Presentation transcript:

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!!