Atoms and the Periodic Table

Front

What is an atom?

Back

The smallest particle into which an element can be divided and still retain its properties.

Front

What are protons?

Back

Positively charged subatomic particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral subatomic particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged subatomic particles that orbit the nucleus of an atom.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number and similar properties.

Front

What is a group in the periodic table?

Back

A column of elements that have similar properties and the same number of valence electrons.

Front

What is a period in the periodic table?

Back

A row of elements that have the same number of electron shells.

Front

What are alkali metals?

Back

Elements in Group 1 of the periodic table, known for being highly reactive and having one valence electron.

Front

What are halogens?

Back

Elements in Group 17 of the periodic table, known for being very reactive nonmetals.

Front

What is atomic number?

Back

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