1. S8P1: Students will examine the scientific view of the nature of matter. a. Distinguish between atoms and molecules. f. Recognize that there are more than 100 elements and some have similar properties as shown on the Periodic Table of Elements.

2. Good Afternoon! Hope you had a great weekend!  Come in and grab your interactive notebook from the back desk.  Read teacher response on page 13!!!  Glue in your notebook check on page 32  On page 33 write your student response: Did you like the grade you received and why? What do you think of your note-taking so far? How can you take better notes next time.

3. Unit 2: Atoms and Molecules  EQ: Who discovered the atom?  EQ Answer: (skip two lines) Page 34-36

4. Learning Goals (LGs)  LG1: I will understand the differences and similarities between atoms and molecules.  LG2: I will understand the differences and similarities between atoms and molecules by relating back to matter.  LG3: I will understand the differences and similarities between the parts of the atom and molecules by using real-world examples. Choose One:

5. The History of an Atom  It all started with Democritus – 430 BC Democritus suggests that matter is made of atoms, but he can’t prove it. Atom in Greek means “unbreakable”  Robert Boyle – 1670 Boyle reports that elements can’t be broken down and that compounds are combinations of elements. Page 34-36

6.  Antoine Lavoiser -1789 Lavoiser proves Boyle’s theory and who developed the theory of conservation of mass (matter).  Dimitri Mendeleev – 1789 Mendeleev constructed the first Periodic Table of Elements – which was arranged by atomic mass.

7.  John Dalton – 1803 Dalton proves that atoms exist. He calculated the weight of each atom.  J.J. Thomson – 1897 Thomson finds electrons in the atom.

8.  Ernest Rutherford – 1911 Discovered that atoms have a nucleus that has electrons rotating around at great speeds.  Niels Bohr – 1913 Bohr discovered the number of electrons in the outer shell determine its chemical properties.

9.  Henry G.J. Mosely -1913 Came up with today’s Periodic Table based on atomic number. Check this out! https://www.youtube.com/watch?v=thnDxFdkzZs

10. Good Afternoon!  Glue in handout on page 30!  I will be handing back your test paper. You will need to go through and circle on the handout which number you missed. Example if I missed number 4, I would circle 4. At the top put your grade.

11. Partner talk:  You will work with a partner to go through the test and answer all questions again!  YOU WILL NOT SKIP NUMBER 25!!!!  Got questions? Ask me

12. Atoms and Molecules  EQ: What is the difference between atoms and molecules?  EQ Answer: (skip three lines)  Element – matter that has only one type of atom.  Atom – smallest piece of matter that still has the properties of the element. Page 37-38

13. Parts of an Atom:  Protons – Positive Charge particles (1+)  Neutrons – neutral or no charge particles  Electrons – negative charge particles (1-)  Nucleus – located in center of atom consists of protons and neutrons; electrons surround the nucleus

14. Foldable AtomMolecule

15. Under Atom Flap Atom: The smallest/basic unit of an element. *Has a nucleus made up of protons (+) and neutrons (no charge) *The nucleus is positive from protons! *Electrons (-) move around the nucleus

16. Under Molecule Flap Molecule: a group of atoms bonded together, representing the smallest unit of a compound. *A compound is made up of two or more elements.

17. Picture of AtomPicture of Molecule

18. Good Afternoon!  Review atom notes for quiz today!  Draw a huge atom on p. 39 in your interactive notebook. Make colorful and label parts!

19. Draw this chart on either p. 38 or 39 Particles of an Atom ParticlesChargeLocation in an Atom ProtonPositive Electron

20. Building an Atom  Each person will have a partner to work with. Your partner will be the one sitting next to you.  You will be given a blank atom. You have to put protons, neutrons, and electrons in the right place.

21. Hydrogen Atom  Protons: 1  Neutrons: 0  Electrons: 1

22. Helium Atom  Proton: 2  Electron: 2  Neutron: 2

23. Beryllium Atom  Proton: 4  Electron: 4  Neutron: 5

24. Carbon Atom  Proton: 6  Electron: 6  Neutron: 6

25. Oxygen Atom  Electron: 8  Neutron: 8  Proton: 8

26. Neon Atom  Proton: 10  Neutron: 10  Electron: 10

27. Take out a Sticky Note 1 2 3 4

28. 5. What charge does a proton have? 6. What charge does a neutron have? 7. What charge does an electron have? 8. What charge is inside the nucleus? 9. What charge is outside the nucleus?

29. Read Pages 102-108  Answer 1a and 2a.  Write questions!!!!  If you have any questions, please raise your hand. I am here to help you learn.

30. Periodic Table of Elements https://www.youtube.com/watch?v=0RRVV4Diomg