20046196-IB-HL-Chemistry-Assessment-Statements-Topic-6-and-16

20046196-IB-HL-Chemistry-Assessment-Statements-Topic-6-and-16

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Andrew Voyles IB Chemistry Assessment Statements: Topics 6 and 16 6.1.1: The rate of reaction is the decrease in the concentration of one of the reactants per unit time, or the increase in the concentration of one of the products per unit time. 6.1.2: A graph may be plotted of concentration against time, with time on the x-axis and some measure of how far the reaction has gone (ie concentration, volume, mass loss etc) on the y-axis. This will produce a curve and the rate at any given point is the gradient of the tangent to this curve. 6.2.1: The kinetic theory states that all matter consists of particles (atoms or molecules) in motion, as the temperature increases, the average speed of the movement increases, there is a temperature to which we can extrapolate, absolute zero, at which, theoretically, the motion of the atoms and molecules would stop, the pressure of a gas is due to the motion of the atoms or molecules of gas striking the object bearing that pressure, and that there is a very large distance between the particles of a gas compared to the size of the particles such that the size of the particle can be considered negligible. 6.2.2: Activation energy is the energy that must be overcome in order
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20046196-IB-HL-Chemistry-Assessment-Statements-Topic-6-and-16

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