Dissolving sugarcubes in Room 12

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Last week in Rang a Trí we conducted a science experiment to investigate  how long it takes for a sugar cube to dissolve in different temperatures of water. We brainstormed in groups about what we would need and what we would have to do. When all the groups came together with their ideas we combined them and made a plan. We gathered everything that we needed: thermometers, sugar cubes, plastic spoons, see-through plastic cups and hot and cold water. For a timer we used an online stopwatch on the whiteboard. We worked in six different groups. First of all we put 100ml of hot water into our plastic cups. We put our thermometers into the hot water and recorded the temperature of the water. Then we dropped our sugar cubes into the hot water and stirred them, and we began the stopwatch just as we dropped the sugar cubes in. We observed and recorded the time that it took for the sugar cubes to dissolve using the online stopwatch. After that, we reduced the temperature of the water by replacing 50ml of the water with cold water and mixing the two to make lukewarm water. We repeated the procedure and recorded our results. Finally, we used 100ml of cold water and repeated our procedure and recorded our results again. When the water was hottest it ranged from 47 to 40 degrees and it took from  47 seconds to 28 seconds for the sugar cubes to dissolve. The lukewarm water ranged from 38 to 23 degrees and it took from 1 minute 9 seconds to 28 seconds for the sugar cubes to dissolve. The cold water ranged from 18 to 17 degrees and it took from 1 minute 10 second to 40 seconds for the sugar cubes to dissolve. We concluded that the colder the water is, the longer it will take for a sugar cube to dissolve in it.