Thermal+physics+IGCSE

=Cooling curve of Stearic Acid= We carried out an experiment of a cooling curve of [|Stearic Acid].

The results are available


 * Main Point** You need to be able to explain what is happening to the energy that is released by bonds being made during the phase change from liquid to solid.  That is the energy needs to be given out, so while this is happening the temperature does not change.

=Rate of evaporation=

Before

 * mass of measuring cylinder|| ........g||
 * mass of water and measuring cylinder|| ||
 * mass of water|| ||
 * mass of tray|| ||
 * mass of tray and water|| ||
 * mass of water|| ||

After

 * mass of measuring cylinder|| ........g||
 * mass of water and measuring cylinder|| ||
 * mass of water|| ||
 * mass of tray|| ||
 * mass of tray and water|| ||
 * mass of water|| ||

Before

 * mass of beaker cold|| ........g||
 * mass of water and beaker|| ||
 * mass of water|| ||
 * mass of beaker hot|| ||
 * mass of beaker and water|| ||
 * mass of water|| ||

After

 * mass of beaker cold|| ........g||
 * mass of water and beaker|| ||
 * mass of water|| ||
 * mass of beaker hot|| ||
 * mass of beaker and water|| ||
 * mass of water|| ||

Before

 * mass of tray fan|| ........g||
 * mass of water and tray || ||
 * mass of water|| ||
 * mass of tray no fan|| ||
 * mass of tray and water|| ||
 * mass of water|| ||

After

 * mass of tray fan|| ........g||
 * mass of water and tray || ||
 * mass of water|| ||
 * mass of tray no fan|| ||
 * mass of tray and water|| ||
 * mass of water|| ||

=Specific Heat Capacity of Brass=


 * Mass of calorimeter cup||.......g||
 * Mass of cup and Water||.......g||
 * Mass of water||.......g||
 * Mass of Brass||.......g||
 * Starting temperature of Brass||........C||
 * Final temperature of Brass||.......C||
 * Starting temperature of water||.......C||
 * Final temperature of water||.......C||

[|Check your answer]