Introduction to the Periodic Table

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, typically expressed in atomic mass units (amu). For example, the atomic mass of gold (Au) is approximately 196.97.

Front

In which section of the periodic table are metals located?

Back

Metals are primarily located in the dark blue section of the periodic table.

Front

What is each column in the periodic table called?

Back

Each column in the periodic table is called a group.

Front

What does the atomic number of an element indicate?

Back

The atomic number indicates the number of protons in an atom, which is also equal to the number of electrons in a neutral atom.

Front

What is a periodic table?

Back

A periodic table is an arrangement of elements in columns based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells in the elements.

Front

What are nonmetals and where are they found in the periodic table?

Back

Nonmetals are elements that lack the characteristics of metals and are found on the right side of the periodic table.

Front

What is the significance of the group number in the periodic table?

Back

The group number indicates the number of valence electrons in the elements of that group, which affects their chemical properties.

Front

What are metalloids?

Back

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

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom and are involved in chemical bonding.