2. Staircase Line

3. Metals

4. Non-metals

5. Metalloids

7. The term 'periodic' from Periodic Table means pattern and / or
Interval and helps scientists see patterns in the chemical and physical
properties of elements. The elements are organized by families. The
staircase line separates the metals from the non-metals. Each
element that is on the staircase line is known as a metalloid and has
properties of both metals and non-metals. The exception is hydrogen, where
even though it is grouped with the metals, is actually a non-metal.
There are 4 physical properties that we use to describe metals, non-metals
and metalloids. They are state at room temperature, appearance, conductivity,
malleability/ductility.

8. Alkali Metals
*Extremely reactive with water

9. Alkaline Earth Metals
*fairly reactive

10. Halogens
*Extremely reactive, usually found in compounds

11. Noble Gases
*Unreactive