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Density


Definition
An object's mass divided by its volume; a measure of how many particles are packed together into a certain amount of space (related word: dense)
 
Key Context
What happens when you pour honey, water and oil into the same container? The honey always sinks to the bottom. Then, there is a layer of water in the middle. The oil layer is always on top. Even if you shake the container, each layer will settle again because of their densities. The mass of oil per unit volume is the least. The oil rises to the top. The density of honey is the greatest and it sinks to the bottom.