The structure of the atom

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The structure of the atom
Simple Atomic Structure
Two positive protons and two negative electrons
Gain an electron to become negative
Lose an electron to become positive
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Charging Up Rods
Its all about moving electrons
Acetate positive
Polythene Negative
Cloth Negative
Cloth Positive


Acetate
-
-
Polythene



-
-
-


-

-
-
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Bringing Charges Together
Attract
Repel
Repel
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The Electric Field
This is a region where a charge experiences a
force
The field is from to -
Neutral Point
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The Gold Leaf Electroscope
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The Test for Charge
The positive rod attracts the balloon
NO
So the balloon must be negative
The balloon is uncharged
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The Test for Charge is Repulsion
This balloon must be negative
This balloon must be positive
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Uses of Static Electricity
Spraying a Car
Positive Car
Negative Spraygun
The paint spreads out as each negative drop repels
No paint is wasted as the positive car attracts
the negative paint
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Removing Smoke from Power Station Chimnies
No smoke leaves the chimney
Positive Plate
Negative Plate
Charge up the Smoke
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Earthing Petrol Tankers
Petrol rubbing against the pipe can build up a
static charge which could cause an explosion
The tanker is joined to the ground with a wire to
stop a charge building up