Pre-lab Questions 1. Draw a hydroxyl (alcohol) group. 2. What IUPAC suffix is usually given to molecules with a hydroxyl (alcohol) g 3. Draw a thiol group. 4. What IUPAC suffix is usually given to molecules with a thiol group? Thiol 5. Draw the basic structure of an ether. 6. Explain how ethers are commonly named (draw and give a specific example 7. Draw the basic structure of an aldehyde. 8. What IUPAC suffix is usually given to aldehydes?