Why does sugar (a Solid) act like a liquid?
I assume you mean that, when poured, it takes the shape of the container (like a liquid), rather than keeping it’s original shape (like a solid). Well, each granule of suger does keep it original shape, so what you have with a bowl of suger is not a solid but hundreds of little solids all mixed up together. It is a good demonstration of how a liquid works – a liquid is lots of atoms or molecules mixed together, like grains of suger in a bowl. They don’t have any bonds holding them together, so they don’t have to stay in position relative to each other when they are poured/stirred/moved in some other way. It is good to question the rules in science, because it leads to a better understanding of how they apply in real life. And, who knows, one day you may find a rule that is not always true – then you go down in history as the scientist who redefined Gungenheism’s Principle (or whatever) and future generations have to learn about you in class!
