Unit 4 Review

Front

What are nonmetals?

Back

Nonmetals are elements that are typically gases or brittle solids at room temperature, and they are poor conductors of heat and electricity.

Front

What are metalloids?

Back

Metalloids are elements that have properties intermediate between metals and nonmetals. They are found along the stair-step line on the periodic table.

Front

What do elements in the same period have in common?

Back

Elements in the same period have the same number of energy levels.

Front

Which groups on the Periodic Table are the most reactive?

Back

Group 1 (alkali metals) and Group 17 (halogens) are the most reactive groups.

Front

What are the characteristics of nonmetals?

Back

Nonmetals are usually gases or brittle solids, have low melting and boiling points, and are poor conductors of heat and electricity.

Front

What is the significance of the stair-step line on the periodic table?

Back

The stair-step line on the periodic table separates metals from nonmetals and indicates the location of metalloids.

Front

What are the properties of metals?

Back

Metals are typically shiny, malleable, ductile, and good conductors of heat and electricity.

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are colorless, odorless, and inert under standard conditions.

Front

What is a period in the context of the periodic table?

Back

A period is a horizontal row in the periodic table, indicating elements with the same number of energy levels.

Front

What are alkali metals?

Back

Alkali metals are highly reactive elements found in Group 1 of the periodic table, including lithium, sodium, and potassium.