Answer
a. Calcium is a metal
b. Sulfur is a nonmetal
c. a shiny element is a metal
d. an element that is a gas at room temperature is a nonmetal
e. an element located in group 8A is a nonmetal
f. bromine is a nonmetal
g. Boron is a metalloid
h. Silver is a metal
Work Step by Step
there is a heavy line on the periodic table separating metals (left) and nonmetals (right), along that line are the metalloids (except aluminium)
you can see the heavy zigzag line at figure 4.6
a. Calcium is from Group 2A ( left of the heavy line), so it is classified as a metal
study this at page 107, topic "Metals, Nonmetals, and Metalloids"
