15 16Atomic Charges

Starter

Practice

Application

Connection

Exit

Subatomic

Particle

Fact 1

Fact 2

Fact 3

Charge

Symbol

Proton

Neutron

Electron

Materials Attract or Repel

Use what you know about electrons, protons, and charges to explain your observations

Charged Plasticand Charged Skin

Charged Plasticand Neutral Desk

Charged Plasticand Charged Plastic

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

9/4/14 9/4/14Atomic Charges

Agenda 1. Starter

2.Atomic Charges Notes 3. Atomic Charges

Activity 4. Exit

Date Lecture/ Activity/ Lab Page8/29 Syllabus /Notebook Guidelines 1-28/29 Periodic Table/ Formula 3-48/29 Tools/ Measurement 5-68/29 Lab Report/ Investigations 7-88/29 Restroom passes/Homework Log 9-109/2 Atomic Theory Research notes 11-12 9/3 Atomic Structure 13-149/4 Atomic Charges 15-16

Table of Contents

StarterProton

Electron

Neutron

Subatomic Particle

Fact 1 Fact 2 FACT 3 Charge Symbol

Proton

Neutron

Electron

Practice:

FOUND IN NUCLEUS

ALWAYS EQUAL TO ELECTRONS IN A NEUTRAL ATOM

POSITIVE CHARGE

FOUND IN NUCLEUS

USED TO HOLD PROTONS IN THE NUCLEUS

NEUTRAL (NO CHARGE)

FOUND IN ELECTRON CLOUD OUTSIDE THE NUCLEUS

ALWAYS EQUAL TO PROTONS IN A NEUTRAL ATOM

NEGATIVE CHARGE

Materials Attract or Repel

Use what you know about electrons, protons, and charges to explain your observations

Charged Plasticand Charged Skin

Charged Plasticand Neutral Desk

Charged Plasticand Charged Plastic

Application:

Part A

Part B

Part C

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

Part A

WHAT IS HAPPENING?

Protons and Electrons before Rubbing

Protons and ElectronsAfter Rubbing

Opposites Attract!

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

Part B

1. Charge two strips of plastic2. 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

Part C

Two Neutral Plastic Strips

Two Charged Strips Like Charges Repel!

1. Inflate a balloon2. 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.

Connection:

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

Exit:

15 16Atomic Charges

Starter

Practice

Application

Connection

Exit

Subatomic Particle

Fact 1

Fact 2

Fact 3

Charge Symbol

Proton

Neutron

Electron

Materials Attract or Repel

Use what you know about electrons, protons, and charges to explain your observations

Charged Plasticand Charged Skin

Charged Plasticand Neutral Desk

Charged Plasticand Charged Plastic

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

9/4/13 9/4/13Atomic Charges