1. 10/20/14 CHEMISTRY MRS.TURGEON “Happiness is not something ready made. It comes from your own actions.” –Dalai Lama OBJECTIVES SWBAT: 1.Describe how an ion is formed DO NOW: 1. Compare/contrast magnesium-24 and magnesium-26

2. 10/21/14 CHEMISTRY MRS.TURGEON “How wonderful it is that nobody need wait a single moment before starting to improve the world.” Anne Frank OBJECTIVES SWBAT: 1.Describe how an ion is formed DO NOW: 1. In your own words describe the difference between an atom and an ion

3. 10/21/14 CHEMISTRY MRS.TURGEON Reminders: 1. Element Ad needs to be picked up by tomorrow afternoon 2. Ion worksheet due at beginning of class tomorrow (Wednesday) 3. Experimental data is due Thursday, Oct. 30 4. Science fair papers & boards are due on Wednesday, Nov. 19.

4. 10/17/14 CHEMISTRY MRS.TURGEON “Love and compassion are necessities, not luxuries. Without them humanity cannot survive.” –Dalai Lama OBJECTIVES SWBAT: 1.Describe the Law of Conservation of Mass DO NOW: 1. If we had perfect lab conditions during our Law of Conservation of Mass lab, what results should we have seen?

5. 10/14/14 CHEMISTRY MRS. TURGEON Due date Summary: 1. Review of Literature outline & 5 pictures of you with your experiment set up due Wednesday, Oct. 15 PASS FORWARD NOW!

6. 10/10/14 CHEMISTRY MRS.TURGEON “If you accept the expectations of others, especially negative ones, then you never will change the outcome.” -Michael Jordan OBJECTIVES SWBAT: 1.Complete the outline for Review Of Literature DO NOW: 1. Get out your Avg Atomic Mass POGIL and get ready to share your answers (2 minutes)

7. 10/8/14 CHEMISTRY MRS. TURGEON 1. Complete a “pop corn” reading within your POGIL group 2. You and your group should answer the analysis question that matches your group number. Be prepared to share with the class.

8. 10/7/14 CHEMISTRY MRS. TURGEON Average Atomic Mass: 1. We will share out in our normal order.

9. Do Now: Fill in the table below 0 Outside of nucleus (electron cloud) Electron 10 In nucleus Neutron 1+1 In nucleus Proton MASS (amu) RELATIVE CHARGE LOCATION (in the atom) SUBATOMIC PARTICLE

10. Chemistry9/17/13Mrs. Turgeon “Great minds discuss ideas; average minds discuss events; small minds discuss people.” – Eleanor Roosevelt “Great minds discuss ideas; average minds discuss events; small minds discuss people.” – Eleanor Roosevelt DO NOW: In your notes, write down everything you know about an atom DO NOW: In your notes, write down everything you know about an atom

11. Chemistry 9/18/13 Mrs. Turgeon “Do what others won’t to achieve what others don’t” – anonymous DO NOW: In your notes, answer: “What does the atomic number of an element represent?”

12. Honors Chemistry 9/18/13 AGENDA 1. Finish POGIL worksheet (15 minutes) 2. Check-in with the class (spokespersons be ready to share your group’s answers) 3. Start Isotopes POGIL YOUR REVIEW OF LIT FOR SCIENCE FAIR IS DUE NEXT WEDNESDAY!!!!!!!!!!!!!!

13. Interpretation of a Chemical Formula Sulfuric Acid H 2 SO 4 Two atoms of hydrogen One atom of sulfur of sulfur Four atoms of oxygen of oxygen H H O S O O O

14. Models of the Atom Dalton’s model (1803) Thomson’s plum-pudding model (1897) Rutherford’s model (1909) Bohr’s model (1913) Charge-cloud model (present) Dorin, Demmin, Gabel, Chemistry The Study of Matter, 3 rd Edition, 1990, page 125 Democritus’s model (400 B.C.) 1800 1805..................... 1895 1900 1905 1910 1915 1920 1925 1930 1935 1940 1945 1803 John Dalton pictures atoms as tiny, indestructible particles, with no internal structure. 1897 J.J. Thomson, a British scientist, discovers the electron, leading to his "plum-pudding" model. He pictures electrons embedded in a sphere of positive electric charge. 1904 Hantaro Nagaoka, a Japanese physicist, suggests that an atom has a central nucleus. Electrons move in orbits like the rings around Saturn. 1911 New Zealander Ernest Rutherford states that an atom has a dense, positively charged nucleus. Electrons move randomly in the space around the nucleus. 1913 In Niels Bohr's model, the electrons move in spherical orbits at fixed distances from the nucleus. 1924 Frenchman Louis de Broglie proposes that moving particles like electrons have some properties of waves. Within a few years evidence is collected to support his idea. 1926 Erwin Schrodinger develops mathematical equations to describe the motion of electrons in atoms. His work leads to the electron cloud model. 1932 James Chadwick, a British physicist, confirms the existence of neutrons, which have no charge. Atomic nuclei contain neutrons and positively charged protons. + - - - - - e e e + + + + + + + + e ee e e e e

15. Chemistry 9/20/13 Mrs. Turgeon DO NOW: 1.In your notes: “What does the mass number in the Isotopic chemical Symbol represent?”

16. Chemistry 9/20/13 Mrs. Turgeon Agenda 1. Review Isoptopes 2. Review Atom POGIL 3. Review Beanium Lab

17. Isotopes Atoms of the same element with different mass numbers Atoms of the same element with different mass numbers (because they have different #’s of neutrons) Mass # Atomic # Atomic symbol: Atomic symbol: Hyphen notation: Boron-11 Hyphen notation: Boron-11

18. Fill in the blanks below… = proton = neutron (no electrons shown) = proton = neutron (no electrons shown) # of # of atomic mass Protons neutronsnumbernumber symbol A B 555 10 5B5B 56511 5B5B

19. Isotopes - practice Chlorine-37 Chlorine-37 atomic #: atomic #: mass #: mass #: # of protons: # of protons: # of electrons: # of electrons: # of neutrons: # of neutrons: 1737171720 Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem

20. Isotope Worksheet Diagram# Protons# NeutronsElementSymbol 22 Helium 33 Lithium 43 Beryllium

21. Isotope Worksheet Diagram# Protons# NeutronsElementSymbol 45 Beryllium 67 Carbon 78 Nitrogen

22. Isotope Worksheet Diagram# Protons# NeutronsElementSymbol 87Oxygen 9. Which two nuclei are isotopes of each other? Same element, different mass numbers

23. Beanium Lab The 3 Isotopes of Beanium represent the SAME ELEMENT. They are exactly the same except for the number of neutrons! Let’s compare our model (Beans) to a real element (Carbon)

24. Carbon-12 and Carbon-14 + + + + + + Nucleus Electrons Carbon-12 Neutrons 6 Protons 6 Electrons6 + + + + + + Carbon-14 Neutrons 8 Protons 6 Electrons6 Nucleus Electrons

25. Atomic # Mass # Carbon-12 Atomic # Mass # Carbon-14

26. Beanium Lab Let’s do the last problem together. Let’s do the last problem together. Who wants to share their data? Who wants to share their data?

27. IONS Ions are atoms that have lost or gained electrons. Ions are atoms that have lost or gained electrons. An atom that loses an electron becomes a positive ion (CATION) An atom that loses an electron becomes a positive ion (CATION) An atom that gains an electron becomes a negative ion (ANION) An atom that gains an electron becomes a negative ion (ANION)

28. EXAMPLES OF IONS 1. A magnesium atom loses two e - and becomes… 2. A chlorine atom loses two e - and becomes… 3. When these two ions bond, what compound is formed?  Magnesium chloride, MgCl 2 (more on this next chapter!) Mg 2+ (a cation) Cl 1- (an anion)

29. Practice Ions Chart… Ion SymbolProtonsElectronsCharge S 2- 1618- 2 K 1+ 1918+ 1 Ba 2+ 5654+ 2 Fe 3+ 2623+ 3 Fe 2+ 2624+ 2 F 1- 910- 1 O 2- 810- 2 P 3- 1518- 3

30. HOMEWORK – Read 4-10 & 4-11 Read 4-10 & 4-11 #’s 65-73,80-83 #’s 65-73,80-83 Study for a possible element quiz next week! Study for a possible element quiz next week!