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TOC 9/5: Atom Basics

TOC 9/5: Atom Basics . Starter: Draw a basic atom. Label all of the subatomic particles, and the two main parts of it. . II. Practice . Take Notes!. Let’s get familiar with each box on the Periodic Table. 11. Atomic Number. Na. Chemical Symbol. Sodium. Chemical Name. 23.0.

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TOC 9/5: Atom Basics

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  1. TOC 9/5: Atom Basics Starter: Draw a basic atom. Label all of the subatomic particles, and the two main parts of it.

  2. II. Practice • Take Notes!

  3. Let’s get familiar with each box on the Periodic Table 11 Atomic Number Na Chemical Symbol Sodium Chemical Name 23.0 Atomic Mass

  4. Now, let’s take each piece separately!!

  5. Let’s look at the Atomic # On our Periodic Table, it’s the # on the TOP 11 Na Sodium 23.0 Think APE!!! Atomic number = Protons = Electrons

  6. At this point we know A=P=EAtomic Number = Protons= Electrons Let’s Practice!!!

  7. 8 8 • LET’S PRACTICE…THINK A=P=E • Atomic number? • Number of Protons? • Number of Electrons? O 8 OXYGEN 16 8

  8. Atomic Mass On our Periodic Tables, it’s the number on the bottom. Notice the # is in decimal form. For our purposes, we will round to the nearest whole # 11 Na Sodium 23.0

  9. This is what we know:1. Atomic #(which also tells us the # of Protons & Electrons)2. Atomic Mass SO… how do we find the # of Neutrons?

  10. M-A=N Mass- Atomic Number = Neutrons

  11. Let’s figure it out! 11 • What ‘s the Atomic #? • How many Protons are there? • How many Electrons are there? • What is the Atomic mass? • What part of the Atomic Mass represents the protons? • So, if we have 11 protons in the Atomic Mass, how much mass then must represent the Neutrons? 11 11 11 Na 23 Sodium 23.0 11

  12. How do we find Neutrons??M-A= N • 23 • 11 • 12 Neutrons

  13. Think APE MAN • Find the number of protons, neutrons, and electrons in Fluorine!! A=P=E 9 protons, 9 electrons M-A=N 19-9 = 10 Neutrons

  14. III. Application • Glue in the chart under Application. • Using a pencil & your periodic table, fill in the chart.

  15. IV. Connection • You found an unknown substance that you had analyzed. The chemist discovered it had 79 protons. What did you find AND how did you know? V. Exit • In 3-4 sentences, explain what makes every Element on the Periodic Table different.

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