Chemistry Lesson(1)

15 Points Per Correct Answer - No time limit  

1. What is the general formula for alkanes? CnH2n+1OH CnH2n+2 CnHn+2 CnH2n

2. What is another word for formic acid? Methanoic acid Ethanoic acid Acetic acid Propionic acid

3. An ester is formed when carboxylic acid reacts with alcohol. What are some of the uses of esters? used in lubrication used in disinfectant aerosol sprays artificial flavorings and fragrances detergents

4. An alkene is formed from the cracking of petroleum. How do we differentiate between alkanes and alkenes? Hydration Halogenation with decolorization Hydrogenation Dehydration

5. Nylon is used in many things in our lives today. Examples are umbrellas, raincoats, fishing line, ropes and tents. Which of the following has the same linkage as nylon? Vitamins Fats Proteins Carbohydrates

6. What is produced in the incomplete combustion of alkenes? oxygen and water carbon monoxide and alcohol carbon dioxide and water carbon monoxide and water

7. Carboxylic acid... forms a salt, water and carbon dioxide when reacted with carbonate is a poor electrolyte gives off steam when reacted with magnesium forms a salt and hydrogen with a metal oxide

8. Industrially, ethanol can be produced by the reaction of steam with ethene. This reaction is catalysed by what? finely divided iron phosphoric(V) acid vanadium(V) oxide heated zinc

9. What is the purpose of the condensor in the process of ethanol oxidising to ethanoic acid? prevent the conversion of the ethanol to ethene prevent the escape of any unchanged ethanol prevent the reaction of the ethanoic acid with the ethanol prevent the reforming of ethanol from the ethanoic acid

10. Which reaction does not produce carbon dioxide? Fermentation of sugar Oxidation of ethanol to ethanoic acid Reaction of ethanoic acid with calcium carbonate Combustion of methane