Following on from recent posts in this thread:
For my chemistry controlled assessment, I chose to investigate the effects of changing the mass of salt added to a constant volume of water. I was used ammonium nitrate salt . I used 50ml of water (dependant variable), and changed the amount of salt being added from 0.5g - 5g. I measured at every 0.5g interval. to enhance reliability and accuracy I repeated each test 3 times. Note all temperatures were measured in degrees Celsius. See attached table of data
SALT AMOUNT(G) START TEMPERATURE(°) END TEMPERATURE(°) TEMPERATURE CHANGE(°)
0.5 23 25 24 22 25 24 1 0 0
1.0 23 24 24 23 24 23 0 0 1
1.5 24 24 24 22 23 23 2 1 1
2.0 24 24 23 22 23 22 2 1 1
2.5 24 25 24 21 22 22 3 2 2
3.0 24 25 25 21 22 22 3 3 3
3.5 23 25 21* 20 21 20 3 4 1
4.0 24 25 25 21 20 20 3 4 5
4.5 23 25 24 18 20 19 5 4 5
5.0 23 25 24 18 19 19 5 6 5
* OUTLIER
