Periodic Table Review

Front

What is a noble gas?

Back

A noble gas is a group of chemical elements that are odorless, colorless, monatomic gases with very low chemical reactivity. Examples include Helium, Neon, Argon, Krypton, Xenon, and Radon.

Front

Which element has 8 protons?

Back

Oxygen (O) has 8 protons.

Front

How many groups are in the periodic table?

Back

There are 18 groups in the periodic table.

Front

What classification do most elements on the periodic table belong to?

Back

Most elements are classified as Metals.

Front

What does the number at the top of each square on the periodic table represent?

Back

The number at the top of each square represents the atomic number of the element.

Front

What is the atomic number?

Back

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

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 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 is a chemical symbol?

Back

A chemical symbol is a one or two-letter abbreviation used to represent an element, such as H for Hydrogen or O for Oxygen.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells an atom has.