Periodic Table

Front

What element has two valence electrons and two energy levels?

Back

Beryllium (Be)

Front

What are the vertical columns on the periodic table called?

Back

Groups

Front

What are the horizontal rows on the periodic table called?

Back

Periods

Front

Who discovered the nucleus?

Back

Rutherford

Front

How do you calculate the number of neutrons in an atom?

Back

Mass - Atomic number = Neutrons

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the periodic table's arrangement?

Back

Elements are arranged by increasing atomic number, which reflects their electronic structure and properties.

Front

What are transition metals?

Back

Elements found in groups 3-12 of the periodic table, known for their ability to form variable oxidation states.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are usually dull, insulative, and brittle.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.