Density classifies as a characteristic explicitly and volume does not. For something to have a characteristic, this means that it is something used to show what exactly that something is. For example, you can have 3 lead blocks of different sizes but they all have the same substance which is lead. The density will all be the same for all 3 blocks, but the volume is different for each object, meaning that the size of the object is different. Hope this helps!
<span>Lithium and Sodium both have their last elections added to s subshells. All alkali and alkali earth metals have their last electrons placed in s subshells.</span>
Density measures how heavy something is for its size. Liquids of different densities can not be mixed and will separate with the heavier densities at the bottom and the lighter densities at the top. The different objects float at different levels in the liquid depending on their densities.
