(Originais Teachy 2023) - Question Medium of Chemistry

When studying covalent bonds, 1st-year high school students learned about Lewis theory, which describes the formation of covalent bonds through the sharing of electron pairs between atoms. Considering that the covalent bond is formed between two non-metals, propose and explain an example of a covalent compound, highlighting its structural formula and how Lewis theory can be applied to describe the formation of covalent bonds in the chosen compound. Additionally, briefly discuss a characteristic physical or chemical property of this type of covalent compound that differentiates it from ionic or metallic compounds.

The addition in cycloalkanes is a type of chemical reaction that occurs between two organic compounds, through the opening of an aromatic cycle. This reaction is responsible for the formation of a new compound, with the presence of a different functional group. What is the chemical equation for the addition of bromine to cyclopropane?

Identify the organic function present in the ester of molecular formula C4H8O2 that is responsible for the aroma of a fruit. Consider that the ester has a carbon chain of 3 carbon atoms and a radical from a monocarboxylic acid of general formula CnH2nO2. Name the monocarboxylic acid and the alcohol used in the synthesis of this ester, following the IUPAC nomenclature rules for organic compounds. Justify the choice of the acid and the alcohol based on the structure and the desired aroma.