Electricity Lesson 1 Chemistry review - PowerPoint Presentation

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Electricity  Lesson 1  Chemistry review
Electricity  Lesson 1  Chemistry review

Electricity Lesson 1 Chemistry review - Description


When at atom GAINS or LOSES electrons it becomes CHARGED It will become NEGATIVE if it gains electrons It will become POSITIVE if it loses electrons ELECTRICITY A form of energy that results from the interaction of ID: 733959 Download Presentation

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Slide1

Electricity

Lesson 1 Slide2

Chemistry review

When at atom

GAINS

or

LOSES

electrons it becomes

CHARGED

It will become NEGATIVE if it gains electronsIt will become POSITIVE if it loses electrons Slide3

ELECTRICITY

A form of energy that results from the interaction of

CHARGED

particles (between protons and electrons)Slide4

Laws of electric charges

Like charges

REPEL

Opposite charges

ATTRACT

Charged objects

ATTRACT

neutral objects Slide5

CHARGING IN THREE WAYS

Charging by

FRICTION

Charging by

CONTACT

Charging by

INDUCTIONSlide6

CHARGING BY FRICTION

When two materials are rubbed together , the

FRICTION

can cause surface

ELECTRONS

to get knocked off one material and transferred  to the next

If we rub an ebonite rod with a  piece of fur, both objects become charged.

Electrons are transferredSlide7

Electrostatic series

How do we know the charges on the ebonite and glass rod?

ELECTROSTATIC

SERIES

When rubbing ebonite and fur the ebonite becomes

NEGATIVE

and the fur becomes

POSITIVESlide8

GROUNDING

When a charged object is discharged or

NEUTRALIZED

by a connection with Earth

Earth is so large it acts like a pool of charge

It can give or take electrons from an object that is connected to it

But the earth remains neutral because it is so large Slide9

CHARGING BY CONTACT

When

CONTACT

is made between a

NEUTRAL

object and an object that is

CHARGED

you charge by contact Slide10

electroscope

Metal leaf electroscopes consist of a sphere that is connected to a rod, which has metal leaves attached to it.

The sphere, rod, and leaves are all made of metal, which allows electrons to move freely.

The rod and the leaves are usually enclosed in a glass container

to shield the leaves from air currents.

An insulator, such as a rubber stopper, isolates the rod from

B

the glass container. The leaves of a metal leaf electroscope spread apart when a charge is near the sphere or when the electroscope has a charge. Slide11

electroscopeSlide12

SO MUCH KNOWLEDGE

With this new knowledgeFinish your lab from yesterday Answer the analysis questions

LAB DUE MONDAY

Shom More....
By: trish-goza
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