Everyday Science · 45 sec
Periodic table
The science behind something you encounter, use, or wonder about.
The useful idea
- Rows and columns
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups").
- Ordered by number
It is a depiction of the periodic law, which states that when the elements are arranged in order of their atomic numbers an approximate recurrence of their properties is evident.
- Groups share traits
Elements in the same group tend to show similar chemical characteristics.
Why this matters
Look for Periodic table the next time you notice this pattern in everyday life.
Try this
Look for Periodic table the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Periodic table?
- Groups share traits
- Ordered by number
- Rows and columns — correct
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups").