1. Catalyst Label the following as physical or chemical changes: Burning a candle Cracking an egg Melting Butter Freezing ice Aluminum foil reacting with pool cleaner

2. Unit 1 Learning Target Log

3. Unit 1 – Atomic Theory, The Periodic Table, and Food Toxicology Dangerous Elements

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

5. 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!

6. Atom’s Family a

7. Lesson 1.1 – Introduction to the Atom

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

10. At the Particulate Level (APL) Now that we’ve talked about particles as atoms, molecules, elements, compounds, and mixtures, let’s focus on each on individually. What is in our food at the smallest level?

11. The Atom

12. 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

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

14. 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

15. 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!

16. 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

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

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

20. Neutral Like the car gear, like water, like switzerland! To be neutral, the positives and negatives must cancel out! Neutral Tweet! Equal nmbr of protons and electrons #Chemswag #Learning #MrAstorIsABoss The resulting charge is zero!

21. SUMMARIZE

22. Scientific Literacy - Death by Element Complete the reading using your Curriculet log-ins You must answer the appropriate questions to advance in the reading.

23. Exit Ticket Subatomic Particle SizeChargeLocation Proton Neutron Electron

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

26. Closing Time No practice!