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Students took their Atom unit quiz on important historical developments in atomic theory & atomic structure today. Following this, they worked independently on the laptops towards completing their PhET "Isotopes & Average Atomic Mass" activity packet.
HW:
Following a review sheet to prepare for tomorrow's quiz on atomic structure & its historical development, students used the PhET simulation "Isotopes & Atomic Mass" to investigate how the atomic weight values found on the periodic table are obtained.
We went over the final page of the PhET Build an Atom activity packet. Quiz on Atomic Structure & Historical Development will be Thursday.
Students work in pairs on the laptops using the PhET "Build an Atom" simulation to investigate the internal structure of the atom and how it affects characteristics like atomic number, atomic mass and charge.
Students worked through a worksheet packet using the simulation and turned it in to the substitute at the end of the period. We will assess progress and continue the investigation on Monday.
Millikan Lab Activity sheets were collected; also, today was the last day to submit Specific Heat Lab Reports with a late submission penalty. We discussed the development of the understanding of the atom's structure from the early 19th Century (Dalton's "Bowling Ball Model") through the late 19th/early 20th Century (Thomson's "Plum Pudding Model" and Rutherford's nuclear model), focusing on the Gold Foil Experiment carried out by Rutherford. HW: Bring textbook and headphones to class tomorrow.
Students completed a lab activity where they determined the mass of a BB using a method of mass difference similar to the process utilized by Robert Millikan to calculate the charge on a single electron. Completed lab papers due tomorrow. Also, tomorrow is the last day I will accept late submissions for the Specific Heat of Metals Lab.
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October 2017
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