Ex. 2 Answer the questions. 1. What is hydrocarbon?
2. The atom of what chemical element do we remove from hydrocarbons?
3. What liquid contains hydrocarbons?
4. What type of bonds do unsaturated hydrocarbons have?
5. What is the formula of unsaturated hydrocarbons with one double bond?
Ex. 3 Complete these sentences. Use can or could + one of these verbs. To obtain, to occur, to show, to remove, to constitute, to store, to have 1.Yesterday I ….. a new substance.
2. Hydrocarbons ….. in crude oil.
3. Chiral saturated hydrocarbons ……. the side chains of biomoleclues.
4. Last time I ….. all impurities from this solution.
5. We …. his compound in kerosene.
6. These hydrocarbons …….triple bonds.
7. I can ….. you how to carry out this experiment.
Ex. 4 Complete the sentences using can or may/might/could. 1. Saturated hydrocarbons …..be linear or branched.
2. She …… finish her experiment tomorrow.
3. The release of energy in chemical reactions ….. occur when the reactants have higher chemical energy.
4. I think Michael …. Be at the university now. I will go and check.
5. I think Ann ….. titrate the solution which she has just obtained tomorrow.
6. The reaction of hydrochloric acid, HCl, with sodium hydroxide, NaOH, solutions …. Produce a solution of sodium chloride.
7. 3-methylhexane and branched hydrocarbons …. Be chiral.
Ex. 5 Correct the mistakes in the sentences. 1. He mays be right.
2. This substance can has react with sodium chloride at high temperature.
3. Hydrocarbons with the same formula is isomers.
4. Can you do carry out this experiment by yourself?
5. Hydrocarbons can are gases and liquids.
6. Some unsaturated hydrocarbons have can double bonds.
7. Can she measures temperature?
