Write one letter in each blank to match each set of product requirements.
1. the material
_ should be used to make the pipes in a home because it is strong and
relatively nonreactive.
2. the tip of a match contains a compound called red phosphorus, which bums easily in air. during the
production of matches, the red phosphorus needs to be stored under
because it is a
nonreactive gas that keeps the red phosphorus from burning.
a. argon
b. copper
c. magnesium