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The structure of the atom

ELECTRON Negative. NEUTRON No Charge. PROTON Positive. Simple Atomic Structure. The structure of the atom. Two positive protons and two negative electrons. Gain an electron to become negative. Lose an electron to become positive. More free powerpoints at http://www.worldofteaching.com.

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The structure of the atom

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  1. ELECTRON Negative NEUTRON No Charge PROTON Positive Simple Atomic Structure The structure of the atom Two positive protons and two negative electrons Gain an electron to become negative Lose an electron to become positive More free powerpoints athttp://www.worldofteaching.com

  2. + - - + Charging Up Rods It’s all about moving electrons Acetate positive Polythene Negative Cloth Negative Cloth Positive + + Acetate - - Polythene + + + - - - + + - + - -

  3. - - + + + - - + + + + + + - - - - - Bringing Charges Together Attract Repel Repel

  4. Positive Plate Negative Plate The Electric Field This is a region where a charge experiences a force The field is from + to - Neutral Point

  5. + + + The Gold Leaf Electroscope

  6. - - -

  7. The Test for Charge + + + + + + Build up of negative charge on this side The positive rod attracts the balloon NO So the balloon must be negative The balloon is uncharged

  8. + + + - - - The Test for Charge is Repulsion This balloon must be negative This balloon must be positive

  9. 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

  10. Removing Smoke from Power Station Chimnies No smoke leaves the chimney Positive Plate Negative Plate Charge up the Smoke

  11. 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

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