1. 1314 Atomic Charges Starter Practice Application Connection Exit Materials Attract or Repel Use what you know about electrons, protons, and charges to explain your observations Charged Plastic and Charged Skin Charged Plastic and Neutral Desk Charged Plastic and Charged Plastic Can you explain why the electrons don’t leave their orbits of the atom? 9/2/15 Atomic Charges EQ: How does a neutral atom change when its number of protons, neutrons, and electrons change? Draw

2.  1. Starter  2.Atomic Charges Notes  3. Atomic Charges Activity  4. Exit

3. DateLecture/ Activity/ Lab Page 8/28 Syllabus /Notebook Guidelines 1-2 8/28 Periodic Table/ Formula 3-4 8/28 Tools/ Measurement 5-6 8/28 Lab Report/ Investigations 7-8 8/31 Atomic History 9-10 9/1 Atomic Structure 11-12 9/2 Atomic Charges 13-14 Table of Contents

4. Proton Electron Neutron

5. F OUND IN NUCLEUS A LWAYS EQUAL TO E LECTRONS IN A NEUTRAL A TOM P OSITIVE C HARGE F OUND IN NUCLEUS U SED TO HOLD PROTONS IN THE NUCLEUS N EUTRAL ( NO CHARGE ) F OUND IN E LECTRON CLOUD OUTSIDE THE NUCLEUS A LWAYS EQUAL TO PROTONS IN A NEUTRAL ATOM N EGATIVE CHARGE

6. Materials Attract or Repel Use what you know about electrons, protons, and charges to explain your observations Charged Plastic and Charged Skin Charged Plastic and Neutral Desk Charged Plastic and Charged Plastic

7. 1. Cut two strips of grocery bag; about 2-4 cm wide and about 20 cm long 2. Hold the plastic strip firmly at one end. Then grasp the plastic strip between the thumb and fingers of your other hand 3. Quickly pull your top hand up so that the plastic strip runs through your fingers. Do this three or four times. 4. Allow the strip to hang down. Then bring your other hand near it. 5. Write “attract” or “repel” in the chart in your notebook 6. Describe what happened in the chart in your notebook. Procedure: Charged Plastic and Charged Skin

8. W HAT IS HAPPENING ? Protons and Electrons before Rubbing Protons and Electrons After Rubbing Opposites Attract!

9. 1. Charge one strip of plastic the same way you did previously. 2. This time, bring the plastic strip toward your desk or chair. 3. Write “attract” or “repel” in your chart 4. Describe what happened in the chart in your notebook. Procedure: Charged Plastic and Neutral Desk

10. 1. Charge two strips of plastic 2. Slowly bring the two strips of plastic near each other. 3. Write “attract” or “repel” in your chart. 4. Describe what happened in the chart in your notebook. Procedure: Charged Plastic and Charged Plastic Two Neutral Plastic Strips Two Charged StripsLike Charges Repel!

11. 1. Inflate a balloon 2. Now rub it on your hair and clothing! 3. Bring the balloon slowly towards the confetti paper 4. Draw the following pictures in your journal 5. describe what is happening in each.

12. Can you explain why the electrons don’t leave their orbits of the atom?

13. 1314 Atomic Charges Starter Practice Application Connection Exit Materials Attract or Repel Use what you know about electrons, protons, and charges to explain your observations Charged Plastic and Charged Skin Charged Plastic and Neutral Desk Charged Plastic and Charged Plastic Can you explain why the electrons don’t leave their orbits of the atom? 9/2/15 Atomic Charges EQ: How does a neutral atom change when its number of protons, neutrons, and electrons change? Draw