Buoyant or Negative Buoyancy?

Buoyant or Negative Buoyant? Yesterday we made hypotheses about what items might sink or float. If an item floats it is buoyant. We found that items with heavy weights were negatively buoyant. However, we tested Coca-cola and diet Coca-cola. They had the same amount of liquid and weight. The Coca-cola sank but the diet coca cola was buoyant. This is because the Coca-cola was more dense (contains more sugar and chemical materials). What we noticed about the maths block was it was buoyant because it is made of wood. Different types of wood can be more dense than other types of wood. We concluded that the surface area of an object can affect how well it stays buoyant.