Periodic table properties.

Properties of the Periodic Table

1. Elements are arranged by atomic number

Elements are placed in order by the number of protons they have.

2. Rows are called periods

The horizontal lines in the periodic table are called periods.

3. Columns are called groups

The vertical lines in the periodic table are called groups.

4. Elements in the same group have similar properties

Elements in the same group behave in similar ways.

5. Metals are mostly on the left side

Most metals are found on the left side of the periodic table.

6. Non-metals are mostly on the right side

Most non-metals are found on the right side of the periodic table.

7. Metalloids are in the middle

Metalloids have properties of both metals and non-metals.

8. The periodic table helps predict how elements behave

Scientists use the periodic table to understand and predict how elements will react.