Chapter 19 8th Grade Putman

At room temperature, most metals are ____.

• gases

• radioactive

• liquids

• solids

The process by which solid iodine particles change directly to gas without first becoming a liquid is called ____.

• evaporation

• ionization

• condensation

• sublimation

Elements that form salts by combining with metals are ____.

• allotropes

• ionics

• fluorides

• halogens

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

• nonmetals

• metalloids

• noble gases

• metals

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

• allotropes

• halogens

• graphites

• carbons

An allotrope of carbon that is soft and can be used as a lubricant is ____.

• sand

• graphite

• diamond

• silicon

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

• diamond

• quartz

• silicon

• graphite

Hydrogen is grouped with the alkali metals because it ____.

• is a metal

• has one electron in its outer energy

  level

• is a gas

• does not readily form compounds

A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the ____.

• actinide series

• lanthanide series

• halogens

• alkali metals

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

• alkaline earth metals

• actinides

• transition elements

• halogens