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Catalyst

Explore the world of atoms and subatomic particles in this introductory unit. Learn about the size, location, and mass of protons, neutrons, and electrons, and discover the fascinating world of atomic theory and the periodic table.

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Catalyst

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  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. Atom’s Family • a

  6. Lesson 1.1 – Introduction to the Atom

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

  8. At the ParticulateLevel(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?

  9. The Atom

  10. 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

  11. Three Types of Subatomic Particles • All atoms contain the following subatomic particles: • Protons • Neutrons • Electrons

  12. Protons Protonsare 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

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

  14. 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

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

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

  17. 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!

  18. summarize

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

  20. Exit Ticket

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

  22. Closing Time • No practice!

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