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? Acetic acid Propionic acid Ethanoic acid Methanoic acid

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

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

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 water carbon dioxide and water carbon monoxide and alcohol

7. Carboxylic acid... gives off steam when reacted with magnesium forms a salt, water and carbon dioxide when reacted with carbonate is a poor electrolyte 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 heated zinc vanadium(V) oxide phosphoric(V) acid

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

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