The children were all curious and interested in the salt we put on the ground outside our centre on icy days. This afternoon, the children and I observed how ice affect ice through a little science experiment. We had three dishes, each of them with one ice cube in it. I asked the children to add two spoon of salt upon the first ice cube, one spoon of salt on the second ice cube and leave the third ice cube plain.
Then, we had a five-minute timer to help us measure the time. "What will happen to the ice cubes?" I asked the children. The children all excitedly said "it will melt!"
"Which one will melt the fastest?" I asked again. This time, each child had his/her own guess.
The children all waited patiently for five minutes. Then, we observed the ice cube by our eyes to see which ice cube became the smallest among the three. We found the plain ice cube was the biggest, but we could not decide which was the smallest.
Therefore, we took out the scale to help us compare which ice cube became the lightest at the end. The difference between the two ice cube with salt were really small (0.1 g)!
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