this was my first attempt at a science report since the start of this year so i wondering whether it was any good. If anyone could go over this and give me some feedback i would really appreciate it. This was the scenario: A student conducted an experiment to investigate how temperature affects the rate at which sugar dissolves in water. They placed one sugar cube into four identical beakers, each containing 100 mL of water at different temperatures: 10°C, 30°C, 50°C, and 70°C.
They stirred each beaker at the same speed and recorded how long it took for the sugar cube to fully dissolve. Here are the results:
At 10°C, it took 180 seconds
At 30°C, it took 120 seconds
At 50°C, it took 70 seconds
At 70°C, it took 45 seconds
Report:
Title: The Effect Of Temperature On Solubility Rates
Introduction:
Solubility is the process bu which solids are able to dissolve in liquids, with different solids having different rates of solubility in different liquids. This experiment will investigate the role of an external factor such as temperature on the rate of solubility of a sugar cube in water.
Method:
- Fill 4 beakers, each with 100 ml of water.
- Heat the beakers to 10 degrees celsius, 30 degrees celsius, 50 degrees celsius, and 70 degrees celsius respectively.
- Place one sugar cube in each of the 4 beakers.
- Stir the water in each of the beakers with a spoon and record the time taken for the sugar cube to fully dissolve.
Results:
10 degrees celsius = 180 seconds
30 degrees celsius = 120 seconds
50 degrees celsius = 70 seconds
70 degrees celsius = 45 seconds
Analysis:
The results from the experiment carried out show a clear trend: as the temperature of the water increases, the amount of time taken for a sugar cube to dissolve in the water decreases. The result if not linear as the difference in the amount of time taken to dissolve the sugar cube does not keep decreasing at a stagnant rate.
Discussion:
The results align with the understanding that the rate of solubility is affected by external factors such as temperature and that the time taken to dissolve a sugar cube in water decreases, but not at an equal proportion. The sharp decrease in time taken to dissolve the sugar cube between 10 degrees celsius and 30 degrees celsius supports the hypothesis that a higher temperature equates to a lesser amount of time taken to dissolve a solid. However, the decrease at 50 degrees celsius suggests that there is a limiting factor.
The method was effective, however keeping the beaker over a constant flame would ensure that the water's temperature did not change and would provide increased accuracy in measuring the time taken to dissolve a solid in the liquid. Additionally, repeating the trials and averaging the results would reduce potential anomalies.
Conclusion:
Temperature has a significant effect on the rate of solubility of a sugar cube in water. The time taken to dissolve the sugar cube decreased in proportion with the increase in temperature, however, the rate of the decrease in time did not match the temperature. This experiment support the hypothesis and demonstrates a key part of chemistry.
thanks!
