Periodic Table Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

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

Back

The number of neutrons can be calculated by subtracting the atomic number from the atomic mass of the element.

Front

What are nonmetals?

Back

Nonmetals are elements that typically lack the characteristics of metals, such as conductivity and malleability, and are found on the right side of the periodic table.

Front

Which group of elements includes the halogens?

Back

The halogens are found in Group 17 of the periodic table and include elements like fluorine, chlorine, bromine, iodine, and astatine.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

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

Back

The periodic table is arranged by increasing atomic number, which reflects the periodic trends in element properties.

Front

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

Back

The main categories are metals, nonmetals, and metalloids.

Front

What is a metalloid?

Back

Metalloids are elements that have properties intermediate between metals and nonmetals, and they are found along the zig-zag line on the periodic table.

Front

What is the role of electrons in determining an element's chemical properties?

Back

Electrons, particularly those in the outermost shell (valence electrons), determine how an element reacts chemically with other substances.

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 valence electron.