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Catalyst

Catalyst. Finish these sentences: Elements are… I THINK atoms are…. Homework Time. Unit 1 – Atomic Theory and the Periodic Table. Death by Element. Who’s in Charge?. It takes 31 cuts to get to the size of the atom! It is 0.0000007 mm!. Lecture 1.1 – Introduction to the Atom.

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Catalyst

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  1. Catalyst Finish these sentences: • Elements are… • I THINK atoms are…

  2. Homework Time

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

  4. Who’s in Charge?

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

  6. Lecture 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. 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

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

  10. 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

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

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

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

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

  15. 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!

  16. summarize

  17. Collaborative Station:Death by Element Reading • Complete the reading with your table • You must answer all questions

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

  19. Closing Time • No homework!

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