Atoms and the Periodic Table

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

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 neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom, contributing to its mass.

Front

What is the atomic mass?

Back

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

Front

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

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the Periodic Table?

Back

The Periodic Table is a tabular arrangement of elements organized by increasing atomic number.

Front

How are elements arranged in the Periodic Table?

Back

Elements are arranged by their atomic number, which reflects the number of protons.

Front

What is a group in the Periodic Table?

Back

A group is a vertical column in the Periodic Table that contains elements with similar chemical properties.

Front

What is a period in the Periodic Table?

Back

A period is a horizontal row in the Periodic Table that indicates the number of electron shells in the elements.