1. Take out your Unit 1 HW, parts A-D should be complete!
Science Starter =
2 x 12 =
How many millimeters in .25 kilometers?
Give one example of a physical and chemical change
Approximately how many copper atoms are there in a penny? Take a guess!

2. Size of an Atom
How many copper atoms make up a penny?
ANSWER: approximately 2.4 x 1022 atoms.
Radii of most atoms:
5x10-11m to 2x10-10m

3. SBWAT describe general atomic structure of neutral atoms
Objective
SBWAT describe general atomic structure of neutral atoms
SWBAT identify relevant information from periodic notation and nuclear notation elements

4. Agenda Science Starter Unit 1 Chemistry Matters Quiz
Atomic Scavenger Hunt
Introduction into atoms/elements
Periodic Table Practice
Exit Ticket/Homework

5. Unit 1 Chemistry Matters Quiz
No cell phones
No wandering eyes
No talking
When you are finished, raise your hand and I will come to you.

6. Unit 1: Chemistry Matters Atomic Structure
February 2, 2016

7. ATOMIC STRUCTURE

8. Atomic Scavenger Hunt Subatomic Particle Symbol Location Charge Mass
PROTON
NEUTRON
ELECTRON
Goals for the scavenger hunt:
Fill in the subatomic particle chart (shown above)
Jot down any other notes that you think are important

9. Expectations You will move around the room in an orderly manner.
You do not have to wait for me to tell you to transition— you may move as you finish filling out the information
You may NOT run
I should NOT hear your voice over anyone else’s
You will have 7 minutes to complete this.

10. Subatomic Particles
Protons
Neutrons
Electrons

11. Protons, Neutrons, & Electrons
Subatomic Particle
Symbol
Location
Charge
Mass
PROTON
NEUTRON
ELECTRON

12. TEDEd: Just How Small is an Atom?
Nn0I

13. Periodic Notation
Chemical Symbol
Chemical Name

14. Periodic Notation
Elements are different because they contain different numbers of protons
Atomic number: number of protons in the nucleus of an atom of that element
Atomic Mass: Average mass of all isotopes on the planet.
** ELEMENTS ARE IDENTIFIED BY THEIR ATOMIC NUMBERS!

15. Nuclear Notation Ne 20
Mass Number 10
Atomic number
Chemical Symbol

16. *The number of protons* DEFINES THE ELEMENT
The number of electrons and neutrons can change, but carbon will ALWAYS have 6 protons.
If Carbon had 7 protons, what would it be?
If it had 5 protons, what would it be?

17. PRACTICE! Element Chemical Symbol Atomic Number Mass Number Chlorine
Potassium
Cobalt
Aluminum
Oxygen

18. Mass Number
The Periodic Table does NOT tell us something called the MASS NUMBER.
MASS NUMBER = # Protons + # Neutrons
 This will tell us the mass of the atom!!
**In order to know this number, it must be given OR number of neutrons must be given!!**

19. How do we calculate subatomic particles?
Atomic number = # of protons = # of electrons
If MASS NUMBER = # Protons + # Neutrons,
then how do we calculate # neutrons if only given Mass number and atomic number?
 # Neutrons = Mass Number – Atomic Number

20. 107 47 Ag

21. Grab your white board and marker!
EXIT TICKET
Grab your white board and marker!

22. Exit Ticket- Do with your group on your whiteboard!
The atomic number represents the number of ______
Neutrons and Protons are found in the ___ of the atom
Which atom has an atomic number of 18