Alkenes OCR A

What is the general structure of alkenes?

• Nitrogen-carbon double bond

• Carbon-carbon single bond

• Carbon-hydrogen double bond

• Carbon-carbon double bond

How are alkenes named using IUPAC nomenclature?

• By identifying the longest carbon chain containing the double bond and using the suffix -ene.

• By counting the number of carbon atoms in the chain

• By adding the suffix -ane to the longest carbon chain

• By using the prefix -ane

What are the physical properties of alkenes?

• High boiling points, solubility in water, and insolubility in nonpolar solvents

• Low boiling points, solubility in water, and insolubility in nonpolar solvents

• Low boiling points, insolubility in water, and solubility in nonpolar solvents

• High boiling points, insolubility in water, and solubility in nonpolar solvents

What are the chemical reactions of alkenes?

• Addition reactions

• Subtraction reactions

• Multiplication reactions

• Division reactions

Explain the addition reactions of alkenes.

• Alkenes undergo substitution reactions with electrophiles

• Alkenes undergo addition reactions with electrophiles such as hydrogen halides, water, and halogens.

• Alkenes undergo oxidation reactions with electrophiles

• Alkenes undergo elimination reactions with electrophiles

What is polymerization of alkenes?

• The separation of alkenes into individual atoms

• A chemical reaction in which monomers of alkenes are joined together to form a polymer.

• A process in which alkenes are converted into a different type of hydrocarbon

• A chemical reaction in which alkenes are broken down into monomers

What are stereoisomers in the context of alkenes?

• Molecules with the same structural formula but different arrangements of electrons.

• Molecules with the same structural formula but different spatial arrangements of atoms.

• Molecules with the same structural formula and the same spatial arrangements of atoms.

• Molecules with different structural formulas and different spatial arrangements of atoms.

How do you determine the E/Z configuration of alkenes?

• By prioritizing substituents on each carbon of the double bond and assigning E or Z based on their arrangement.

• By flipping a coin to decide the configuration

• By counting the number of carbon atoms in the alkene

• By looking at the color of the alkene

What are the different types of addition reactions of alkenes?

• substitution, elimination, rearrangement, cyclization

• combustion, polymerization, condensation, isomerization

• oxidation, reduction, esterification, saponification

• hydrohalogenation, halogenation, hydration, and hydrogenation

Explain the concept of regioselectivity in the addition reactions of alkenes.

• The addition of a reagent to an alkene at a random carbon

• The addition of a reagent to an alkene at the more substituted carbon

• Preference for the formation of one constitutional isomer over the other

• The addition of a reagent to an alkene at the less substituted carbon