Melting Moments

Today in our science Talent Development we were getting into working with solids, liquids and gases.
We did two experiments. These were called Melting Moments A and Melting Moments B. Melting Moments A was when we divided into three groups, two groups of four and one group of five. We needed one plain water ice cube, one sugary water ice cube, one powdered raro ice cube 3 petri dishes and one stop watch. We were going to see which ice cube would melt the fastest. We all wrote down our hypothesises. My hypothesis was that the sugary ice cube would melt first.  After that we got our ice cubes and put them in a petri dish each and labelled them. Then somebody started a stop watch and we watched our ice cubes for 3 minutes. So far the the plain ice cube was 3rd, the sugar ice cube was 1st and the raro ice cube, 2nd. Then we waited another 3 minutes. By that time, the water had melted the most, the sugar hadn't made progress and the raro was still in 2nd place. Then at the 9 minute mark the it was still the same. Then, at the 12 minute mark it turned out the water won! Our next experiment was Melting Moments B. For that we needed three plain water ice cubes, 3 petri dishes, sugar, salt a teaspoon  and a stopwatch. We were going to see which ice cube would melt the fastest: the one with sugar on top, the one with salt or the plain one. Once again, we wrote down our hypothesises. I thought that the plain one would melt first. What we had to do was get the ice cubes and put them in a petri dish each. Then we just did the same thing as the first experiment. In the end it turned out that the ice cube sprinkled with salt melted the fastest.  The reason is because salt changes the freezing point of ice. I can't wait to do our next experiments!