Acs Ch4 L1 Protons Neutrons Electrons

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Activity Sheet Name ______3. Would the following subatomic particles attract each other or repel one Chapter 4, Lesson 1 another? Protons, Neutrons, and Electrons Date ______Two protons ______INTRODUCTION Two electrons ______A proton and an electron ______If you look closely at the tip of a sharpened pencil, you will see that it is made of graphite. Going deeper, graphite is made of carbon atoms. Deeper still, each carbon ACTIVITY atom is made of protons, neutrons, and electrons. In this lesson, you will explore Question to investigate these subatomic particles and their charges. What makes objects atract or repel each other?

Materials for each group Plastic grocery bag Scissors

electrons Procedure, part 1 Charged plastic and charged skin 1. Cut 2 strips from a plastic grocery bag so that each is Protons about& Electrons2–4 cm wide and about 20 cm long. 2. Hold the plastic strip frmly at one end. Ten grasp the plastic strip between the thumb and fngers of your Activity Sheet Name ______3. Would the following subatomicother particles hand as attractshown. each other or repel one Chapter 4, Lesson 1 nucleus another? 3. Quickly pull your top hand up so that the plastic strip Protons, Neutrons, and Electrons Date ______Two protons ______repel runs through your fngers. Do this three or four times. 4. Allow the strip to hang down. Ten bring your other INTRODUCTION 1. Label the nucleus (protons, neutrons) and electrons in the drawing of a Two electrons ______repel hand near it. carbon atom above. A proton and an electron ______attract If you look closely at the tip of a sharpened pencil, you will see that it is made of 5. Write “atract” or “repel” in the chart on page 256 to ACTIVITY describe what happened. graphite. Going deeper, graphite2. Draw is made a line of between carbon atoms.the subatomic Deeper still,particle each and carbon its charge. atom is made of protons, neutrons, and electrons. In this lesson, you will explore Question to investigate Hydrogen Atom these subatomic particles and their charges. What makes objects atract orProtons repel each and other? electrons Protons and electrons Opposites attract proton no charge before rubbing after rubbing electron positive charge Materials for each group neutron negative charge Plastic grocery bag Scissors

Procedure, part 1 Charged plastic and charged skin Activity Sheet Name ______3. Would the following subatomic particles attract each other or repel one 1. Cut 2 strips from a plastic grocery bag so that each is Chapter 4, Lesson 1 another? about 2–4 cm wide and about 20 cm long. Protons, Neutrons, and Electrons Date ______Two protons ______2. Hold the plastic strip frmly at one end. Ten grasp the Two electrons ______plastic strip between the thumb and fngers of your INTRODUCTION ©2011 American Chemical Society Middle School Chemistry Unit 253 254 Middle School Chemistry Unit ©2011 American Chemical Society A proton and an electron ______other hand as shown. If you look closely at the tip of a sharpened pencil, you will see that it is made of 3. QuicklyProcedure, pull your part 2 top hand up so that the plastic strip EXPLAIN IT WITH ATOMS & MOLECULES graphite. Going deeper, graphite is made of carbon atoms. Deeper still, each carbon ACTIVITY runsCharged through plastic your and f neutralngers. desk Do this three or four times. 1. Charge one strip of plastic the same way you did atom is made of protons, neutrons, and electrons. In this lesson, you will explore 4. Allow the strip to hang down. Ten bring your other 1. Label the nucleus (protons,Question neutrons) to investigate and electrons in the drawing of a previously. these subatomic particles and their charges. What makes objects atract or repel each other? hand near it. What happened when you brought the following materials near each other? carbon atom above. 2. Tis time, bring the plastic strip toward your desk or 5. Write “achair.tract” or “repel” in the chart on page 256 to Use what you know about electrons, Materials for each group describe3. Write what “at happened.ract” or “repel” in the chart on the next page. Materials Atract or Repel protons, and charges to explain your 2. Draw a line between the subatomic Plastic grocery particle bag and its charge. observations Scissors Protons and electrons Protons and electrons Opposites attract proton no charge before rubbing after rubbing electron Procedure, positive part 1 charge charged plastic + charged skin Charged plastic and charged skin neutron negative charge Protons and electrons Protons and electrons after Opposites attract 1. Cut 2 strips from a plastic grocery bag so that each is before rubbing rubbing about 2–4 cm wide and about 20 cm long. 2. Hold the plastic strip frmly at one end. Ten grasp the charged plastic + neutral desk plastic strip between the thumb and fngers of your other hand as shown. 3. Quickly pull your top hand up so that the plastic strip runs through your fngers. Do this three or four times. charged plastic + charged plastic 4. Allow the strip to hang down. Ten bring your other 1. Label the nucleus (protons, neutrons) and electrons in the drawing of a hand near it. carbon atom above. ©2011 American Chemical Society 5. Write “atract” or “repel” in theMiddle chart Schoolon page Chemistry 256 to Unit 253 254 Middle SchoolProcedure, Chemistry part Unit 3 ©2011 American Chemical Society describe what happened. 2 pieces of charged plastic TAKE IT FURTHER 2. Draw a line between the subatomic particle and its charge. 1. Charge two strips of plastic 2. Slowly bring the two strips of plastic near each other. Materials for each group Protons and electrons Protons and electrons Opposites attract proton no charge 3. Write “atract” or “repel” in the chart on the next page. Infated balloon before rubbing after rubbing Small pieces of paper, confeti-size electron positive charge Two neutral plastic strips Two charged plastic strips Like charges repel neutron negative charge Procedure Rub a balloon on your hair or clothes. Bring the balloon slowly toward small pieces of paper.

©2011 American Chemical Society Middle School Chemistry Unit 253 254 Middle School Chemistry Unit ©2011 American Chemical Society ©2011 American Chemical Society Middle School Chemistry Unit 255 256 Middle School Chemistry Unit ©2011 American Chemical Society

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Procedure, part 2 EXPLAIN IT WITH ATOMS & MOLECULES Charged plastic and neutral desk 1. Charge one strip of plastic the same way you did previously. What happened when you brought the following materials near each other? 2. Tis time, bring the plastic strip toward your desk or chair. Use what you know about electrons, 3. Write “atract” or “repel” in the chart on the next page. Materials Atract or Repel protons, and charges to explain your observations

Electrons move from skin to Procedure, part 2 EXPLAIN IT WITH ATOMS & MOLECULES plastic giving the plastic a Charged plastic and neutral desk charged plastic + charged skin attract negative charge. Protons and electrons1. Charge Protons one strip ofand plastic electrons the same after way you did Opposites attract previously. before rubbing rubbing What happened when you brought the following materials near each other? 2. Tis time, bring the plastic strip toward your desk or Desk becomes slightly positive chair. Use what you know about electrons, 3. Write “atract” or “repel” in the chart on the next page. chargedMaterials plastic + neutralAtract desk or Repel attractprotons, and charges tosince explain negativeyour electrons in observationsplastic repelled them.

charged plastic + charged skin Both are negative so they Protons and electrons Protons and electrons after Opposites attract charged plastic + charged plastic repel repel before rubbing rubbing

charged plastic + neutral desk Procedure, part 3 2 pieces of charged plastic TAKE IT FURTHER 1. Charge two strips of plastic charged plastic + charged plastic 2. Slowly bring the two strips of plastic near each other. Materials for each group 3. Write “atract” or “repel” in the chart on the next page. Infated balloon Procedure, part 3 Small pieces of paper, confeti-size Two neutral plastic strips2 pieces of chargedTwo plasticcharged plastic strips Like charges repel TAKE IT FURTHER 1. Charge two strips of plastic Procedure 2. Slowly bring the two strips of plastic near each other. Materials for eachRub group a balloon on your hair or clothes.4. Write captions beneath each picture explaining what happened between the 3. Write “atract” or “repel” in the chart on the next page. Infated balloon balloon and your hair and the balloon and the paper in the activity. Small pieces Bring of paper, the confe balloonti-size slowly toward small pieces of paper. Two neutral plastic strips Two charged plastic strips Like charges repel Procedure Rub a balloon on your hair or clothes. Bring the balloon slowly toward small pieces of paper.

Both the balloon When the balloon The balloon now and the paper is is rubbed, it gains attracts the neutral neutral electrons making it paper with more negatively charged. positive towards the balloon. Balloon & Water