Akenes quiz

1. Hydrocarbons are arranged in different groups: alkanes, alkenes, alkynes, and cycloalkanes. Alkenes are aromatic hydrocarbons.TrueFalse2. What is the functional group of an alkene?ionic bondscarbon-carbon single covalent bondcarbon-carbon double covalent bondcarbon-carbon triple covalent bond3. Which of the following alkenes doesn't exist?penteneoctenemethenebutene4. By which of the following reactions do you obtain ethane from ethene (ethylene)?HydrationHydrogenation (Addition of Hydrogen)Addition of ChlorineSubstitution5. When ethene (ethylene) undergoes a chemical reaction with water in the presence of sulfuric acid, it produces a compound (A). What exactly is the compound (A)?methanol (methyl alcohol)ethaneacetic acidethanol (ethyl alcohol)6. Sometimes we can obtain alcohol from an alkene. What is the functional group of any alcohol?hydroxyl groupcarbon-carbon single covalent bondcarboxyl functional groupNone of these7. An alcohol reacts with acetic acid to produce two compounds.What is the chemical name of acetic acid?methanoic acidNone of thesevinegarethanoic acid8. When ethanol (ethyl alcohol) undergoes a reaction with acetic acid, it produces an ester and a compound (B).What is the name of the compound (B)?watermethyl alcohol (methanol)methanoic acidNone of these9. Esters are artificial compounds that are used in industry. What is (are) its use(s)?all of theseinsecticidalflavor and odorpreservative10. Ethanol (ethyl alcohol), ester, and acetic acid contain both carbon and hydrogen atoms, but are they hydrocarbons?Yes, since they are produced by hydrocarbons.No, because hydrocarbons don't have functional groups, while these compounds do.No, because hydrocarbons are only of three kinds.No, because they contain the atom oxygen. Solutions:1. Hydrocarbons are arranged in different groups: alkanes, alkenes, alkynes, and cycloalkanes. Alkenes are aromatic hydrocarbons. The correct answer was False All the mentioned hydrocarbons are aliphatic hydrocarbons.71% of players have answered correctly.2. What is the functional group of an alkene? The correct answer was carbon-carbon double covalent bond There is a double bond between any two carbon atoms.86% of players have answered correctly.3. Which of the following alkenes doesn't exist? The correct answer was methene It is methene because it has only one carbon atom, and therefore there cannot be a double covalent bond between the carbon atoms.83% of players have answered correctly.4. By which of the following reactions do you obtain ethane from ethene (ethylene)? The correct answer was Hydrogenation (Addition of Hydrogen) It is the addition of hydrogen (hydrogenation) because when we add H2 to C2H4 (ethylene) we obtain C2H6 (ethane).76% of players have answered correctly.5. When ethene (ethylene) undergoes a chemical reaction with water in the presence of sulfuric acid, it produces a compound (A). What exactly is the compound (A)? The correct answer was ethanol (ethyl alcohol) According to the following reaction:C2H4 + H2O ---> C2H5OH (C2H6O)where ethylene takes one hydrogen atom from water and the rest (-OH) is the functional group of any alcohol.71% of players have answered correctly.6. Sometimes we can obtain alcohol from an alkene. What is the functional group of any alcohol? The correct answer was hydroxyl group The (-OH) in an alcohol stands for hydroxyl.81% of players have answered correctly.7. An alcohol reacts with acetic acid to produce two compounds.What is the chemical name of acetic acid? The correct answer was ethanoic acid Vinegar is the official name that everyone uses.58% of players have answered correctly.8. When ethanol (ethyl alcohol) undergoes a reaction with acetic acid, it produces an ester and a compound (B).What is the name of the compound (B)? The correct answer was water By this reaction, ester and water are produced.63% of players have answered correctly.9. Esters are artificial compounds that are used in industry. What is (are) its use(s)? The correct answer was flavor and odor With these compounds, we can produce products with taste (flavor) and odor.41% of players have answered correctly.10. Ethanol (ethyl alcohol), ester, and acetic acid contain both carbon and hydrogen atoms, but are they hydrocarbons? The correct answer was No, because they contain the atom oxygen. No, they are not hydrocarbons because hydrocarbons are compounds made up of carbon and hydrogen only, while the other compounds listed above contain the atom oxygen.