Question

1. for each of the following, label as a metal, nonmetal, metalloid

a. __________________ poor conductor of electricity
b. __________________ usually a solid at room temp
c. __________________ ductile
d. __________________ chlorine
e. __________________ semiconductor
f. __________________ silicon
g. __________________ malleable
h. __________________ usually a gas at room temp
i. __________________ cobalt
j. __________________ good conductor of heat
k. __________________ brittle
l. __________________ oxygen

Explanation:

Metals are good conductors of heat and electricity, malleable, and ductile, and are usually solids at room - temperature. Non - metals are poor conductors of heat and electricity, and can be solids, liquids, or gases at room temperature. Metalloids have properties intermediate between metals and non - metals, such as being semiconductors. Chlorine and oxygen are non - metals, silicon is a metalloid, and cobalt is a metal.

Answer:

a. Nonmetal
b. Metal
c. Metal
d. Nonmetal
e. Metalloid
f. Metalloid
g. Metal
h. Nonmetal
i. Metal
j. Metal
k. Nonmetal
l. Nonmetal