Periodic Table

Front

What are elements that are usually gas or liquid and located to the right of the staircase on the periodic table?

Back

Nonmetals are elements that are usually gases or liquids and are located to the right of the staircase on the periodic table.

Front

How do you find the number of neutrons in an element?

Back

To find the number of neutrons, subtract the atomic number from the atomic mass.

Front

What does the atomic number represent in an element?

Back

The atomic number equals the number of protons in an element.

Front

What is unique about Group 18 elements in terms of bonding?

Back

Group 18 elements tend to form bonds with nothing because they have full valence shells.

Front

How many neutrons does the average Carbon atom have?

Back

The average Carbon atom has 6 neutrons.

Front

What are the three main categories of elements on the periodic table?

Back

The three main categories of elements are metals, nonmetals, and metalloids.

Front

What is the significance of the staircase line on the periodic table?

Back

The staircase line on the periodic table separates metals from nonmetals.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes.

Front

What is a valence shell?

Back

A valence shell is the outermost shell of an atom that contains the valence electrons.