Obtaining Useful Substances from Crude Oil Quiz
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5 questions, one answer each
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1. What is cracking used for?
- A. Joining small molecules into polymers
- B. Breaking down larger hydrocarbons into smaller, more useful ones
- C. Separating crude oil into fractions by boiling point
- D. Testing for the presence of a double bond
2. Which two methods can be used to carry out cracking?
- A. Distillation and filtration
- B. A hot catalyst, or steam at very high temperature
- C. Electrolysis and titration
- D. Freezing and evaporation
3. What general formula describes the alkenes produced during cracking?
- A. CnH2n+2
- B. CnH2n
- C. CnHn
- D. CnH2n-2
4. A student shakes an unknown hydrocarbon with bromine water and it stays orange. What does this show?
- A. The hydrocarbon is an alkene
- B. The hydrocarbon is saturated (an alkane)
- C. The hydrocarbon has been cracked
- D. The hydrocarbon is a polymer
5. Decane (C10H22) is cracked to produce octane (C8H18) and one other product. What is the other product?
- A. C2H6 (ethane)
- B. C2H4 (ethene)
- C. CH4 (methane)
- D. C2H2 (ethyne)