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 is the periodic table?

Back

A chart showing all of the elements arranged according to their properties.

Front

What do elements in the same group of the periodic table have in common?

Back

They have similar properties.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom's nucleus and determines the element's identity.

Front

Where are the most reactive metals located on the periodic table?

Back

The far left of the periodic table.

Front

What group does sodium (Na) belong to?

Back

Group 1.

Front

What period is sodium (Na) found in?

Back

Period 3.

Front

What are alkali metals?

Back

Alkali metals are the elements found in Group 1 of the periodic table, known for being highly reactive.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.