Elements and Their Properties

Substances that conduct electricity only under certain conditions are most likely to be…

• metals

• nonmetals

• metalloids

• noble gases

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

• lanthanides

• actinides

• transition elements

• noble gases

The __________ often occur in nature as uncombined elements.

• alkaline earth metals

• alkali metals

• actinide series

• transition elements

A group of elements that has two electrons in its outer energy level is the _______________.

• alkaline earth metals

• alkali metals

• halogens

• actinides

Metals can be used as wire because they are ______________.

• malleable

• ductile

• shiny

• alloys

An allotrope of carbon that is hard and is often used in jewelry is ______________.

• silver

• diamond

• quartz

• graphite

At room temperature, most metals are __________________.

• liquids

• solids

• gases

• radioactive

Different forms of the same element that have different properties because of atom arrangements are called ______________.

• allotropes

• carbons

• silicons

• graphites

When hydrogen reacts with the active metals, it _____________.

• shares electrons

• gains one electron

• loses one electron

• loses two electrons

In the gaseous state, ______________ form diatomic covalent molecules.

• noble gases

• alkali metals

• alkaline earth metals

• halogens