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
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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