Periodic Table Review

Front

What is a halogen?

Back

Halogens are a group of elements in Group 17 of the periodic table, known for being highly reactive nonmetals. Examples include Fluorine, Chlorine, and Bromine.

Front

Which elements are called metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are found along the staircase line on the periodic table, including elements like Silicon and Arsenic.

Front

What does the atomic number represent?

Back

The atomic number of an element represents the number of protons in its nucleus and determines the element's identity.

Front

What is found at the top of each square on the periodic table?

Back

The number at the top of each square on the periodic table is the atomic number, which indicates the number of protons in the element.

Front

What are noble gases?

Back

Noble gases are the elements in Group 18 of the periodic table, known for having full valence electron shells, making them very stable and unreactive. Examples include Helium, Neon, and Argon.

Front

What is the significance of the periodic table?

Back

The periodic table organizes all known elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

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

Back

The main categories of elements in the periodic table are metals, nonmetals, and metalloids.

Front

What is the difference between atomic mass and atomic number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while atomic number is the number of protons in the nucleus of an atom.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell. Examples include Lithium, Sodium, and Potassium.

Front

What is the role of valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom and are important for determining how an element reacts chemically.