Catalyst 1.What are the three subatomic particles and where is each one located? 2.What does neutral mean and how do we keep atoms neutral? End

Rate Yourself Based on the exit ticket and your current level of understanding, rate yourself 1 – 4 on LT 1.1

Lecture 1.2 – Introduction to the Periodic Table

Today’s Learning Target 1.2 – I can create a Periodic Table and explain how atomic number, atomic mass, and periodic trends are illustrated on this table.

The Periodic Table On the Periodic Table, we are told the following about every element: – Atomic Number – Atomic Mass – Element Name – Element Symbol

Atomic Number Atomic Number – The number of protons in the nucleus of an atom. Atomic number is the same for all atoms of the same element. Atomic Number

Atomic Mass Atomic Mass – The mass of an atom Atomic Mass = # Protons + # Neutrons Atomic Mass

Element Name and Symbol Every element has a 1 or 2 letter symbol. The first letter is ALWAYS capitalized.

Lab 4 – Constructing a Periodic Table

Periodic Table Arranged By Atomic Number The Periodic Table is arranged by increasing atomic number since this is what makes an element unique from another element. Two elements can have the same atomic mass, but two elements can never have the same atomic number

SUMMARIZE

Closing Time Practice 1.2 – Periodic Table