Periodic Table Review

Front

What is a noble gas?

Back

Noble gases are a group of chemical elements in Group 18 of the periodic table that are characterized by their lack of reactivity due to having full valence shells. Examples include Helium (He), Neon (Ne), and Krypton (Kr).

Front

What does the atomic number represent in the periodic table?

Back

The atomic number is the number of protons in the nucleus of an atom and determines the element's identity. It is located at the top of each square on the periodic table.

Front

What are the majority of elements on the periodic table classified as?

Back

Most elements on the periodic table are classified as metals, which are typically good conductors of heat and electricity.

Front

How many protons does the element Oxygen have?

Back

Oxygen has 8 protons, which is also its atomic number.

Front

What are Group 18 elements known as?

Back

Group 18 elements are known as noble gases, which have full valence shells and are generally non-reactive.

Front

What is the chemical symbol for Krypton?

Back

The chemical symbol for Krypton is Kr.

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.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are found along the zig-zag line on the periodic table.

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 is a chemical symbol?

Back

A chemical symbol is a one or two-letter abbreviation used to represent an element on the periodic table.