ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: kenhung123 on April 08, 2010, 08:17:32 pm
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1. Is spectroscopy only used for metals?
I am not sure how to refer to the substance under investigation such as a solution with iron which is used in AAS to find its concentration
2. Do I call the substance sample, metal sample, atoms, element, compounds? (i.e. pure and when in solution)
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spectroscopy used to determine chemical composition: the use of spectroscopy to determine the chemical composition, energy levels, and molecular structure of substances (not necessarily metals) :D i think...
the substance can be called a sample...(so u can nvr be wrong) and if its in a solution u say solution...i suppose... :P
hope u understand....:3
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So if its a solution of dissolved iron we can just refer to it as solution of unknown concentration? Or we need to be specific - unknown concentration of an (atom/element/compounds not sure what to refer to it as)
So we can't ever use "metal sample" since its never only metal besides the flame test?
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spectroscopy involves substances absorbing energy. the effect of radiation from different partys of the electromagnetic radiation on atoms and molecules can tell us:
1. what type of molecules/atoms are present (qualitative analysis)
2. how much of a specific molecule/atom is present (quantitative alaysis)
3. the structure and the bonds of the molecule