AS2 T4 Alkenes Quizizz

What is the definition of an unsaturated hydrocarbon?

• A hydrocarbon with only single bonds

• A hydrocarbon with at least one C=C or C≡C bond

• A hydrocarbon with no carbon-carbon bonds

• A hydrocarbon with only triple bonds

What is used to test for alkenes?

• Chlorine water

• Bromine water

• Iodine solution

• Sulfuric acid

What type of bond is a region of high electron density in alkenes?

• C-H bond

• C=C bond

• C-C bond

• C≡C bond

What is the IUPAC rule for naming alkenes regarding the carbon chain?

• Select the shortest chain of C atoms

• Select the longest chain of C atoms containing the double bond

• Select the chain with the most hydrogen atoms

• Select the chain with the least number of double bonds

What type of bond is formed by the sideways overlap of p orbitals in alkenes?

• Sigma bond

• Pi bond

• Ionic bond

• Hydrogen bond

Which of the following is an example of an electrophile?

• Alkane

• Halogen

• Water

• Oxygen

What is the major product when propene reacts with HBr?

• 1-bromopropane

• 2-bromopropane

• 1,2-dibromopropane

• Propane

What is a primary carbocation?

• A carbocation with one carbon directly bonded to the positively charged carbon

• A carbocation with two carbons directly bonded to the positively charged carbon

• A carbocation with three carbons directly bonded to the positively charged carbon

• A carbocation with no carbons directly bonded to the positively charged carbon

What is the role of bromine solution in testing for alkenes?

• It turns blue in the presence of alkenes

• It decolourises in the presence of a C=C double bond

• It forms a precipitate with alkenes

• It changes to red in the presence of alkenes

What is the process called where alkenes are used to produce plastics?

• Addition polymerisation

• Condensation reaction

• Hydrolysis

• Oxidation