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Warm Up….complete on the top third of page 5 in your notebook 1.Where is the mass in an atom? 2.What is the overall charge of the nucleus of an atom? How do you know? 3. Sesame street: For the 4 vocab terms listed, Which three go together? WHY? Which does not belong? WHY? Homework: Study for Quiz States of matter Atomic structure Periodic table cells Proton Nucleus Electron Neutron Date Session # 9/1-2 2 Activity Page # Subatomic Particle Calculations 5 Subatomic Information on the Periodic Table -Notes 6 8.P.1 Understand the properties of matter and changes that occur when matter interacts in an open and closed container. 8.P.1.1 Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements. TLW calculate atomic structure by taking notes, summarizing demonstrations and completing atom family periodic table cells. Bringing it all together… For example, OXYGEN is an element on the periodic table. It is made of only one type of atom Actual Oxygen Atom Oxygen on the Periodic Table P6 PERIODIC TABLE CELLS Atomic Number = number of protons In a neutral atom, the number of protons is equal to the number of electrons What other numbers in your life act as an identification number? SYMBOL RULES: •ELEMENTS START WITH A CAPITAL LETTER •Any other letters in the symbol are lower case…Just like when you write your name Co ≠ CO !! CO ≠ Co P 5 middle section Comparing protons, neutrons & electrons Mass demonstration (this is text!!) EVIDENCE I saw, I noticed…. INTERPRETATION I wondered, connected, inferred, concluded… The mass of an atom is…. Based on the demonstration, what can you conclude about the relationship between an atom’s mass and its subatomic particles? How can you use the information in the cells of the periodic table to find the number of neutrons in an atom? (hint: you can’t have part of a neutron) Atomic Mass = The number of protons + number of neutrons inside the nucleus Are Units Important? So what units should we use when describing the mass of an proton, or neutron or electron? How far is it from Charlotte to San Diego? How far is it from Charlotte to San Diego? 3,835,000,000 mm OR 150,990,000 inches OR 2,385.3 miles So what units should we use when describing the mass of an proton, or neutron or electron? 1 proton = 3.687502724 x 10-27 lb =.000000000000000000000000003687502724 lb 1 electron = 2.006647510 × 10−30 lb .000000000000000000000000000002006647510 lb Atomic Mass Units…just for atoms! Protons = 1 amu Neutrons = 1 amu Electron mass insignificant …0. (their charge and configuration are VERY IMPORTANT, not their mass) In your notebook, on the paper under the note sheet on page 6 To find the number of neutrons: 1.Round the Atomic Mass to a whole number 2.Atomic Mass – Atomic Number=NEUTRONS P+N Nucleus --- P protons = N = neutrons KING KONG CHEMISTRY Atomic Number = Protons = Electrons Mass Atomic Number = Neutrons Quick Quiz!!! The periodic table has all the answers P5 Using your notes and the periodic table at your seat, complete the following worksheet P5 What if the model doesn’t look like you expect What if the model doesn’t look like you expect? What if the model doesn’t look like you expect?