11. Differences between amino acids are normally due to differences in the amino group. A. true B. false

12. Which type of coal has the highest carbon content? A. anthracite
B. bituminous C. lignite

13. Carbon typically forms four covalent bonds A. true
B. false

14. The names of the straight-chain alkanes all end with the suffix . A. –ene
B. –ine C. –ane

15. Which of the following compounds has the highest boiling point? A. butane
B. butanoic acid C. butanal

16. Esters contribute which property to fruits? A. odor
B. color C. texture

17. Ethene is the monomer that is used as the building block in polyethylene. A. true
B. false

18. What does neutron absorption accomplish in a nuclear reactor? A. It slows down the reaction.
B. It speeds up the reaction.
C. It increases the rate of heat absorption.

19. The most penetrating form of radiation is . A. beta radiation
B. gamma radiation C. alpha radiation

20.How many termination code words are there? A. twenty
B. four C. three

21.
What is the product of a substitution reaction if the reactants are fluoroethane and sodium hydroxide?
A. ethanol and sodium fluoride
B. flouroethanol and sodium hydride C. ethane and sodium fluoride