Periodic Table Review

Front

What is the main criterion Mendeleev used to arrange the elements in his periodic table?

Back

Mendeleev arranged the elements by atomic mass.

Front

What is the term for each vertical column in the periodic table?

Back

Each vertical column is called a group.

Front

What does the Atomic Number of an element represent?

Back

The Atomic Number represents the number of protons and electrons in an atom.

Front

Which two alkali metals are known to react explosively with water?

Back

Potassium (K) and Sodium (Na) are highly explosive in water.

Front

What is the name of the group that includes Aluminum, Gallium, and Indium?

Back

This group is called the Boron Family.

Front

What is the term for each horizontal row in the periodic table?

Back

Each horizontal row is called a period.

Front

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

Back

The main categories are metals, nonmetals, and metalloids.

Front

What is the significance of the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

What are noble gases, and why are they unique?

Back

Noble gases are elements in Group 18 that are inert and do not readily react with other elements.

Front

What is the general trend of atomic radius in the periodic table?

Back

Atomic radius generally decreases across a period and increases down a group.