1. Catalyst 1. Complete the diagnostic reflection sheet that you picked up on your way into class.

2. Diagnostic Results Average score for the entire 11 th grade: 12.7

5. Lecture 1.1 – Introduction to the Atom

6. How do we annotate texts in Chemistry?

7. Symbols for Annotation In chemistry, anytime you are reading a text, you should use the following symbols ? = Question I Have = Vocab. Word I Know = Vocab. Word I Don’t Know ! = Important Fact/Info = Connection to Other Material

8. Mercury Poisoning Reading Complete the reading with your table You must answer all questions

9. Unit 1 – Atomic Theory and the Periodic Table Death by Element

10. Aluminum Experiment Take out the handout Lab 1 – How Small is an Aluminum Atom? Complete this lab with a partner. Turn into the bin when completed.

11. It takes 31 cuts to get to the size of the atom! It is 0.0000007 mm!

12. CutsSize (mm)Reference 0280N/A 1140Child's hand 270Fingers 335Watch 417.5Keyboard keys 64.375Poppy seeds 81.09375Thread 120.068359375Human Hair 140.017089844Width of paper 180.001068115Bacteria 190.000534058Visible light waves 241.66893E-05Membranes 311.30385E-07Size of the atom!

13. Lecture 1.1 – Introduction to the Atom

14. Today’s Learning Target LT 1.1 – I can identify the size, location, and mass of the three subatomic particles found in the atom.

16. How do chemists characterize the atom?

17. I. Size of the Atom The atom has a diameter between 0.1 – 0.5 nm Point of reference: A basketball has a diameter of 234,500,000 nm

18. II. Three Types of Subatomic Particles All atoms contain the following subatomic particles: 1.Protons 2.Neutrons 3.Electrons

19. III. Protons Protons are found in the nucleus of an atom. The nucleus is located in the center of the atom. Protons have a positive charge. We say that their charge is +1

20. IV. Neutrons Neutrons are found in the nucleus of an atom. Neutrons do not have a charge. They are neutral James Chadwick discovered the neutron in 1932!

21. V. Mass of Protons and Neutrons Protons and neutrons have the same mass. Each subatomic particle has a mass of 1 amu. – amu = atomic mass unit

22. VI. Electrons Electrons are found in the electron cloud. The electron cloud surrounds the nucleus of an atom. Electrons have a -1 charge

23. VII. Mass of Electrons Electrons have a mass that is 0.00054 amu. Electrons do not contribute to the weight of an atom.

25. SUMMARIZE

26. Construct Your Own Atom Using the construction paper provided, create a model of the atom with your table. You will present this in 20 minutes

27. Exit Ticket Subatomic Particle SizeChargeLocation Proton Neutron Electron

28. Learning Log After each learning target, we will

29. Rate Yourself Based on the exit ticket and your current level of understanding, rate yourself 1 – 4 on LT 1.1

31. Closing Time No homework!