• Sub-Topic 1(a) - Specification

    • IGCSE Chemistry (9-1) Specification 1(a)

       

      (a) States of Matter

       

      Students should:

       

      1.1  understand the three states of matter in terms of the arrangement, movement and energy of the particles

       

      1.2 understand the interconversions between the three states of matter in terms of:

      ·       the names of the interconversions

      ·       how they are achieved

      ·       the changes in arrangement, movement and energy of the particles.

       

      1.3 understand how the results of experiments involving the dilution of coloured solutions and

            diffusion of gases can be explained

       

      1.4 know what is meant by the terms:

      ·       solvent

      ·       solute

      ·       solution

      ·       saturated solution

       

      1.5C know what is meant by the term solubility in the units g per 100 g of solvent

       

      1.6C understand how to plot and interpret solubility curves

       

      1.7C practical: investigate the solubility of a solid in water at a specific temperature



    • Line graphs of instantaneous acceleration in meters per second per second versus time in seconds. The line on graph (a) shows slight variation above and below an average acceleration of about 1 point 8 meters per second per second. The line on graph (b) shows great variation over time, with instantaneous acceleration constant at 3 point 0 meters per second per second for 1 second, then dropping to negative 2 point 0 meters per second per second for the next 2 seconds, and then rising again, and so forth.