1. Which of the following is a common reaction of alkenes where a molecule (e.g., H2, Br2) is added across the double bond?

2. Which of the following is a common solvent in organic chemistry known for its nonpolar nature?

3. A reaction results in the formation of a larger molecule from smaller ones, with the simultaneous removal of a small molecule like water. What type of reaction is this?

4. What element is the main component of all organic compounds?

5. A chemist is working with a compound that contains only carbon and hydrogen atoms, with all carbon-carbon bonds being single bonds. What type of hydrocarbon is this?

6. What is the name of the six-carbon ring with alternating single and double bonds, known for its exceptional stability due to delocalized electrons?

7. What is the hybridization of the carbon atoms in an alkene (containing a carbon-carbon double bond)?

8. What is the general formula for an alkane?

9. A reaction involves the removal of atoms or groups from adjacent carbons to form a double or triple bond. What type of reaction is this?

10. Which of the following functional groups characterizes an alcohol?

11. A chemist is synthesizing a polymer by repeatedly joining small monomer units together to form a long chain. What type of reaction is occurring?

12. A chemist is performing a reaction where a hydrogen atom is replaced by a halogen atom on an alkane, typically requiring UV light. What type of reaction is this?

13. You are trying to distinguish between two isomers that have the same molecular formula but different arrangements of atoms in space, leading to different optical properties. What type of isomerism are you observing?

14. What is the term for compounds that have the same molecular formula but different structural formulas?

15. You are analyzing a compound using spectroscopy and observe a strong absorption band around 1700 cm⁻¹ in the infrared (IR) spectrum. This typically indicates the presence of which functional group?