Please answer all of the following questions accordingly. answers do not need to be long just correct.

1. When molecules absorb IR light what types of changes do they undergo? (2 points) 2. What information can IR spectroscopy provide about a molecule? (2 points) Use a table of IR absorbance frequencies to answer questions 3-7. 3. What IR absorbance signal is indicative of a sp C-H bond? (1 point) 4. What IR absorbance signal is indicative of an alcohol? (1 point) 5. What IR absorbance signal is indicative of a ketone? (1 point)