The Periodic Table

Front

What is the primary organizing principle of the Periodic Table?

Back

The Periodic Table is organized by increasing atomic number.

Front

What are the vertical columns on the Periodic Table called?

Back

Groups.

Front

What classification do the elements on the right side of the Periodic Table belong to?

Back

Nonmetals.

Front

What is the name of Group 15 in the Periodic Table?

Back

Nitrogen Group.

Front

How many valence electrons do elements in Group 15 have?

Back

5 valence electrons.

Front

What are the horizontal rows in the Periodic Table called?

Back

Periods.

Front

What is the significance of the atomic number in the Periodic Table?

Back

The atomic number represents the number of protons in an atom's nucleus.

Front

What are metalloids and where are they located on the Periodic Table?

Back

Metalloids are elements with properties of both metals and nonmetals, located along the zig-zag line on the Periodic Table.

Front

What is the general trend in reactivity for alkali metals as you move down the group?

Back

Reactivity increases as you move down the group.

Front

What are the two main categories of elements in the Periodic Table?

Back

Metals and nonmetals.