Download Anticipation Guide Before After The periodic table is a collection of

Anticipation Guide
Before
After
The periodic table is a collection of all elements known to us.
The atomic number is the number of protons in the nucleus.
The atomic number is written below the element on the Periodic
Table.
The atomic mass is the sum of protons and electrons in the
nucleus.
The atomic mass is written above the element on the Periodic
Table.
Atomic mass can be located mostly in the nucleus (the most
dense part of the atom).
The majority of the elements on the periodic table are metals.
Metals are located to the left of the stair step on the
Periodic Table. (See stair step by B, Si, As, Te, etc.)
Metals are characterized by words such as malleable and ductile.
Metals are typically poor conductors of electricity and are good
insulators.
Nonmetals are located to the right of the stair step on the
Periodic Table. (See stair step by B, Si, As, Te, etc.)
Noble gases are located to the extreme left of the Periodic Table.
Noble gases do not react well with other elements.