November 15th, 2014
My homework today was the best ever. We had to decide if toothpaste was a liquid or a solid.
I did some experiments. I found toothpaste only flowed if squeezed. Even syrup flowed in my test tube but very slowly. The toothpaste did not move unless squeezed or pushed. So it is not a liquid.
But it is not a solid as it did not keep it’s shape when I pressed it.
I made a paste from talcum powder and water. Toothpaste is a paste or I found the science word was colloid. It is a solid mixed into a liquid but the solid ha not dissolved.