1. Sept 8st: Subatomic Particles
Objective:
SWBAT define atoms and describe their properties
Do Now:
What is the definition of the word “atoms”?
What things are made from atoms?
How big are atoms?

2. Daily Forecast Do Now (5 min) Powers of 10 Video (10 min)
Sorting Activity (15 min)
Discussion/ Notes (15 min)
Exit Ticket (5 min)

3. Structure of atoms
Sub-Atomic Particles

4. I. What is an atom? Atoms are the basic unit of matter
All matter is made up of tiny atoms
Review: What are the 3 forms of matter?
Solid, Liquid, and Gas

5. Atoms are the building blocks of all matter
Molecule
Atom
Subatomic O
water H H

6. Subatomic Particles Proton Neutron Electron Location in the Atom Mass
Charge

7. There are 3 subatomic particles in an atom
II. Structure of an atom
There are 3 subatomic particles in an atom
Proton
Neutron
Electron

8. III. Atomic Nucleus
The nucleus is a dense area at the center of the atom
Protons and neutrons are found in the atomic nucleus

9. p+
THE PROTON
Found in the nucleus
Heavy: 1 amu
Positive: +1

10. N°  THE NEUTRON Located in the nucleus. Heavy: 1 amu
Neutral: 0 charge

11. Nucleus is held together with nuclear energy
Electron cloud is full of zipping electrons

12. End Zone 50 ½ Football Field
Nucleus: heavy but tiny part of atom. Found in center of an atom and holds 2 important subatomic parts.
Outer Edge of Atom
½ Football Field
End Zone
Nucleus 50

13. e- THE ELECTRON Found in the electron cloud Very light: 0 amu
Negative: -1

14. V. How small is an atom? Atoms are TINY!
20 million hydrogen atoms would fit inside the period at the end of this sentence.
You are made of billions and billions of atoms

15. Neutrons
Protons
Electrons N°  p+ e-
Positive +1
Neutral
Negative -1

16. P+ e- P+ P+ e- N0 e-

17. Please complete the following table
Proton
Neutron
Electron
Location in the Atom
Mass
Charge
Electron Cloud
Nucleus
Nucleus
Heavy
Heavy
Very Light
Neutral 
Negative  -1
Positive  +1

18. VII. Review of Atomic Structure
What is the basic unit of matter?
Atom
What are the 3 subatomic particles?
Proton, Neutron, Electron
What’s the electrical charge of a proton?
Positive (+)
What’s the electrical charge of a neutron?
Neutral
What’s the electrical charge of an electron?
Negative (-)

19. - -
Name 3 things that are wrong with this atom + + - +

20. + +
Name 3 things that are wrong with this atom - - - +

21. -
What is wrong with this Atom? + + + -

22. Draw an atom CORRECTLY
2 protons, 1 neutron, 2 electrons

23. Homework Read the “Atoms” text
Complete the attached homework questions

24. Exit Ticket
What makes up the nucleus of an atom? List the particles and their charges.
Draw an atom that has 3 protons, 2 neutrons, and 3 electrons.
Describe the difference in size between protons and electrons.