1.vertical columns in the periodic table indicate what information?
a. periods
b. liquids
c. synthetic elements
d. groups and families

2.which of these are families of elements?
a. metals and noble gases
b. shells and nonmetals
c. properties and rare earth elements
d. metalloids and atoms

3.why is the atomic mass of many elements not a whole number?
a. elements are unstable.
b. an element may have isotopes with different numbers of neutrons.
c. the atomic mass includes all the electrons.
d. lsotopes are always expressed in decimals.

Read the excerpt from “man listening to disc.” to tommy potter for taking the time to join us on this breezy afternoon with his most unwieldy bass and to the esteemed arthur taylor who is somehow managing to navigate this crowd with his cumbersome drums. and i bow deeply to thelonious monk for figuring out a way to motorize—or whatever—his huge piano so he could be with us today. which of the following additional features would best enhance the reader’s understanding of this excerpt? a diagram showing the narrator’s route through the city a visual simulation of the man walking down the street audio samples of music by the specified musicians textbook chapters on the history of jazz musicians