{10} Periodic Trends

Question 1

Define:

Noble Gas?

Question 2

Define:

Metalloid?

Semiconductors?

Answer 2

A member of category of elements found on the boundary between the metals and nonmetals of the periodic table, with properties intermediate between those of both groups; metalloids are also called semimetals

Question 3

Define:

Alkaline earth metal?

Answer 3

Fairly reactive metals in **group 2A **of the periodic table

Question 4

Define:

Metal?

Answer 4

A member of a large class of elements that are generally good conductors of heat and electricity, are malleable, ductile, and lustrous, and tend to lose electrons during chemical changes

Question 5

Define:

Semiconductor?

Answer 5

A meterial with intermediate electrical conductivity that can be changed and controlled

Question 6

Define:

Halogen?

Answer 6

One of the highly reactive nonmetals in group 7a of the periodic table

Question 7

Define:

Nonmetal?

Answer 7

A member of a class of elements that tend to be poor conductors of heat and electricity and usually gain electrons during chemical reactions.

Question 8

Define:

Alkali metal?