Development of the periodic table

Front

What is the number at the bottom of each square in the periodic table called?

Back

Atomic mass.

Front

What classification do most elements on the periodic table belong to?

Back

Metals.

Front

Who is credited with predicting the existence and properties of new elements in the periodic table?

Back

Dmitri Mendeleev.

Front

How did John Newlands organize the elements in the periodic table?

Back

By atomic mass.

Front

What classification do elements on the right side of the 'stair-step' line in the periodic table belong to?

Back

Nonmetals.

Front

What is the significance of the periodic table in chemistry?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are the two main categories of elements in the periodic table?

Back

Metals and nonmetals.

Front

What is the periodic law?

Back

The properties of elements are a periodic function of their atomic numbers.

Front

What are metalloids, and where are they located on the periodic table?

Back

Metalloids have properties of both metals and nonmetals and are located along the 'stair-step' line.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.