Trends

At room temperature, most metals are _____.

• gases

• radioactive

• solids

• liquids

Substances that conduct an electric current only under certain conditions are most likely to be _____.

• nonmetals

• noble gases

• metals

• metalloids

The elements in Groups 3 through 12 of the periodic table are the ____.

• alkaline earth metals

• actinides

• halogens

• transition metal

A family of elements that has two electrons in its outer energy level is the ____.

• alkaline earth metals

• halogens

• actinides

• alkali metals

The noble gases are in _____.

Elements that lie along the stair-step line of the periodic table are _____.

A family of elements that contains the most reactive metals is the _____.

Hydrogen is grouped with the alkali metals because it ____.

• does not readily form compounds

• is a gas

• has one electron in its outer energy level

• is a metal

Three transition elements in Group 12 of the periodic table are ____.

• mercury, zinc, and cadmium

• copper, silver, and gold

• neon, helium, and xenon

• iron, nickel, and cobalt

The appearance of solid metals can be described as _____.

• dull

• glassy

• powdery

• shiny