Student Preconceptions and Misconceptions in Chemistry by Christopher Horton

By Christopher Horton

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By Christopher Horton

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The 1st NATO technology discussion board was once held in Biarritz in September 1990. This Taormina convention is the second one in a chain that we want to be an extended one and that i think that it has equalled the good fortune of its predecessor. In developing those conferences the NATO technology Committee desired to assemble prime specialists to check fields of robust current curiosity.

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2 Rate of forward reaction increases with time from the mixing of the reactants until equilibrium is established. 1. If the amount of a reactant is increased, its concentration remains the same. 2 When the amount of a reactant is increased the rate of the forward reaction is increased but the amount of the reverse reaction is decreased. 3 When the temperature is increased the rate of the reverse reaction is increased but the rate of the forward reaction is decreased. 4 When the volume is decreased the rate of the forward action is increased but the rate of the reverse reaction is decreased.

3 Air exerts no upward force on a brick. 3 A paper clip can be made to float on top of water, because it is light. 1 A small steel paperclip floats better than a large steel paperclip. 4 Surface tension is like a skin and it is made of something different from water or is made from a different kind of water. 1 Steel ships float because of surface tension. [Bodner (91) G1: “surprisingly popular”]. g. the Titanic) float if they have a larger bottom surface. 2 (misc. 6 A lead bar will displace more water than an aluminum bar of the same dimensions.

1 Forces exist at a point without a charge there. 2 Electrical fields don't exist unless there is something to detect them. 3 The electrical force is the same as the gravitational force. 4 An electrical charge will always move along a field line. 5 What potential difference is is given by V = IR. 1 Electricity "charges" a light bulb but doesn't pass through it. 1 "Electricity" is used up in electric circuits. 2 Charge is used up in electric circuits. 1 Charge becomes energy in a light bulb and is given off.

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