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Organic Chemistry

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  • Beer is made from _________ .
    Barley
  • Bromination is a reaction used as............................................................... (complete the sentence)
    Bromination is a reaction used as a chemical test for an unsaturated carbon.
  • Name the functional group of alkenes.
    It is the carbon carbon double bond.
  • The alkanes are unsaturated hydrocarbons. TRUE/FALSE
    0
  • Unjumble the sentence - reaction photochemical with chlorine substitution it is because reaction is interesting.
    The substitution reaction with chlorine is interesting because it is a photochemical reaction.
  • Draw the structure of ethene, propene, butene and pentene in your notebook.
    Check the picture and fix your answers if wrong.
  • The molecular formula of Butane
    C4H10
  • Formula of Alkenes
    CnH2n
  • Alkanes/ Alkenes make good fuels.
    Alkanes
  • When is carbon monoxide produced in a combustion reaction between butane and oxygen?
    It is produced when the air supply is less or limited.
  • The product formed when ethene reacts with bromine solution. Name the compund.
    1,2 - dibromoethane
  • Is carbon monoxide toxic? Yes or No (If yes, why is it harmful)
    Yes. It is toxic and harmful as it interferes with the transport of oxygen around our body by the red blood cells.
  • Olive oil has __________ acid.
    oleic
  • What is an addition reaction?
    A reaction in which a double bond breaks and adds two new atoms is known as an addition reaction.
  • Butane and Methylpropane are _____________ . They have the same molecular formula but different ____________ and _________ ___________ .
    melting and boiling points.
  • Molecules with the same molecular formula can have different structures. TRUE/FALSE
    TRUE
  • If CO2 and H2O are the products. Guess the reactants.
    An alkane (butane) + Oxygen
  • Trichloromethane or chloroform was used as an anesthetic earlier. This was replaced by________ as it is a more useful and safe anesthetic.
    HALOTHANE
  • Alkanes are chemically ___________ but they burn well.
    UNREACTIVE
  • The alkenes are ______________ hydrocarbons.
    unsaturated.
  • What is Fermentation?
    Fermentation is an anaerobic process, which takes place in the absence of oxygen.
  • Alkenes are unreactive, saturated and unaffected by acids and alkalis. TRUE/FALSE
    FALSE
  • This shows all the atoms in the molecule and how they are bonded.
    Structural formula.
  • Carbon is a _________ and belongs to group ______ of the periodic table.
    Non metal, IV
  • THIS ALKANE FORMS A MAJOR PART OF NATURAL GAS. Choose the correct answer from the bracket (butane, methane, propane)
    Methane
  • Pick the words that are relevant to Alkanes. ( single bond, long chains, unsaturated, unreactive, saturated, good as a fuels, carbon carbon double bonds, carbon carbon single bonds, first series of hydrocarbons.
    single bond, long chains, unreactive, saturated, good as fuels, carbon carbon single bonds, first series of hydrocarbons
  • What chemical test would you suggest for alkenes?
    It can decolorise bromine water.
  • Define the term Isomer.
    Isomers are compounds that have the same molecular formula but different structural formulae.
  • This represents the actual number of atoms in a molecule.
    Molecular formula
  • What is a hydrocarbon?
    A hydrocarbon is a compound that contains only hydrogen and carbon.
  • Alkanes are hydrocarbons with a single bond, alkenes with a double bond. Name the family with triple bonds. ____________
    ALKYNES
  • What is the colour of the bunsen burner flame. (blue, yellow, red)
    YELLOW
  • Alkanes contain a ________ bond of carbon.
    Single
  • Fullerenes and Carbon nanotubes are the oldest forms of carbon. TRUE/FALSE
    0
  • What is Isomerism?
    When a molecule with the same molecular formula but different structures, which means the same number of atoms can be connected in different ways.
  • Give one example of a compound in the homologous series with the name ending with ANE, ENE, OL and OIC acid.
    PROPANE, PROPENE, PROPANOL, PROPANOIC ACID
  • How many carbon atoms are there in Ethane.
    2
  • List any 2 uses of hydrogenation.
    Manufacturing margarine and vegetable oils
  • Ethanol is made by an addition reaction called __________ .
    Hydration
  • Alkanes are a _____________ of saturated hydrocarbons.
    homologous series
  • Alkanes/ Alkenes make good fuels....WHY?
    They burn exothermically.
  • Using the words given below make sentences to list the 3 special features of covalent bonding. CARBON ATOMS, LONG CHAINS, RINGS, SINGLE, DOUBLE, TRIPLE, OTHER ELEMENTS, ATOMS, COVALENT BONDS
    1)Carbon atoms join to each other and form long chains. Other atoms attach to this chain.2)They form single, double or triple covalent bonds.3)Arrange in rings.
  • Compound with a formula of CnH2n+2
    Alkanes
  • _______ water is decolorised when shaken with an alkene.
    Bromine
  • Name the alkane you see in the picture.
    Pentane
  • Define Hydrogenation
    The addition of hydrogen across a C=C double bond is known as hydrogenation.
  • Name the 2 common forms of carbon.
    Diamond and Graphite.
  • Halothanes can also be used for dry cleaning. TRUE/FALSE. Fix the answer is False.
    FALSE. Trichloroethane
  • An organic compound has 3 different formulae. What are they?
    Empirical, Molecular and Structural formulae.
  • Name some carbon containing compounds found in living things.
    Amino acids, sugars, fats, DNA
  • The simplest alcohol contains one carbon atom. Name the alcohol.
    METHANOL
  • Life on Earth evolved using carbon containing molecules such as ____________, __________, and _________ .
    nucleic acids, proteins and carbohydrates.
  • Unsaturated fats are healthier than saturated ones. TRUE/FALSE
    TRUE
  • Draw the structure of methane, ethane and propane in your notebook.
    Compare your answer to the picture given and fix it if wrong.
  • Alkenes are more reactive than alkanes. TRUE/FALSE
    1
  • How are dichloromethane, trichloromethane and tetrachloromethane formed?
    Methane and Chlorine react in sunlight. UV light splits chlorine molecules into energised atoms,which react with methane.Cl atom replaces H, Chloromethane etc.
  • What do the prefixes to the names of the Alkanes indicate?
    They indicate the number of carbon atoms in the chain.
  • Alkyenes are a homologous series with OH as a functional group. TRUE/FALSE
    FALSE
  • Name the compounds that contain triple bonds with carbon.
    Alkenes
  • This shows the simplest possible whole number ratio of the atoms in a compound.
    Empirical formula
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