4th Practical Lesson: 1P5 Observations and Recording Part 2

2/2/11
Yet another practical lesson which we looked forward to. Today, we would be continue from where we left off from last week. We would be doing experiments and of course observing and recording the results. The first experiment was to use the thermometer and we were all excited and eager to get on with it.

Of course being as I was, a cautious person, I awaited instructions from my LSS teacher, Mr Low, who was back from re-service. He gave us instructions on what to do for the experiment and some things to take note of.We were to set up an experiment to heat water.

We then had to record our findings in a table so as to compile the information and then we can look through and analyse the data more easily. Also, we can make a conclusion from the data and prove if our hypotheses is right. In the end, I came up with a graph and proved my hypotheses of there being impurities in the water resulting in the temperature of the water rising to 101.5 degrees Celsius before remaining constant, signifying that 101.5 degrees Celsius is its boiling point.

We had to draw a best fit graph and I am not very skillful at drawing graphs, thus I may have to practise more. I still think that the water from the tap, is still clean but is "dirty" to some extent. This is due to the fact that there are some minerals present in the water. Maybe I could find out how this water is purified. I am looking forward to the next practical lesson!