2. Catalyst 1. What are the two subatomic particles found in the nucleus? 2. What is the charge of a proton and an electron End

3. Solutions to Exit Slip

4. Exit Ticket Answers! Subatomic Particle SizeChargeLocation Proton1 amu+1Nucleus Neutron1 amu0Nucleus Electron0 or 0.00054 Electron Cloud

7. Lecture 1.3 – Introduction to the Periodic Table

8. Today’s Learning Target 1.3 – I can create a Periodic Table and explain how atomic number, atomic mass, and periodic trends are illustrated on this table.

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

10. 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

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

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

13. Lab 2 – Constructing a Periodic Table

14. 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

15. SUMMARIZE

17. Closing Time Homework 1.2 – Periodic Table due Thursday/Friday Quiz Wed on LTs 1.1 – 1.4