Simple Definitions
What is the definition of spectroscopy?
The study of electromagnetic radiation that is absorbed or emitted by a gas
What is the visual identification of absorption spectra?
Colourful background with black slits, varying in thickness
What is the visual identification of an emission spectra?
A black background, with slits revealing colour, varying in thickness
No - their slits will vary in location and thickness
What are the three types of light in the electromagnetic spectrum (forms of electromagnetic radiation)
Visible light, UV light, and radiation
*radiation can be emitted or absorbed
electrons are moving from lower energy levels to higher within an atom (the valence shell is moving outward, atomic radius is increasing)
Would stars produce emission lines?
No, stars only produce absorption lines
Why would an element present as an ionic spectra?
Occurs when an atom absorbs enough energy to the point it loses an electron, and therefore forms an ion
How are elements visually identified?
Every element has a pattern that is unique to the element, and allows for identification. To see the composition of stars, scientists identify different elements patterns within stars to determine composition
Do stars show an absorption or emission spectra?
Stars only produce absorption lines
Why would an element present on the emission spectra?
Occurs when valence electrons move down to lower energy levels, meaning atomic radius decreases
What will an ionized element present the same as on the absorption spectra?
Will resemble the same absorption spectra as the neutral element to the left of it on the periodic table