4. Atoms and Elements

Periodic Table: Classifications — Who is credited with first publishing a periodic table that organized the elements into a repeating pattern of properties?

In the periodic table, what are the horizontal rows called?

Periodic Table: Classifications — Which element is the primary chemical basis of fossil fuels (coal, petroleum, and natural gas)?

How were the elements in Dmitri Mendeleev's first periodic table arranged?

How are metals primarily designated in the periodic table based on their location?

Which element has $26$ protons in its nucleus?

In the periodic table, the horizontal rows are called what?

Which element is commonly used for the shiny trim and decorative plating on cars because it is highly lustrous and corrosion-resistant?

Which statement best explains why water is not listed as an element on the periodic table?

In the periodic table, what are the horizontal rows called?

Periodic Table: Classifications — Who is credited with creating the first widely recognized periodic table that arranged elements in order of increasing atomic mass and predicted properties of undiscovered elements?

How are elements arranged on the modern periodic table?

In the periodic table, what is each horizontal row called?

How is the modern periodic table primarily arranged?

In the periodic table, the vertical columns are called: