Which of the following statements is false? a) a primary amine contains NH2
b) a secondary amine contains a nitrogen atom which makes 3 single bonds
c) secondary amines are often basic
d) tertiary amines have the lowest boiling point as compared to similarly-sized 1° and 2° amines
e) tertiary amines can undergo hydrogen bonding with other tertiary amines

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

If an atom has 12 protons and 13 neutrons

Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.