Q:

How do you explain density to kids?

A:

Quick Answer

Density is the amount of mass in a specified space. It is a way to measure how compact an object is. It is the number of molecules in an area or the mass per unit volume of matter. The denser an object is, the less likely it is to float.

Know More
How do you explain density to kids?
Credit: Jacob Enos CC-BY-2.0

Full Answer

Density can be better explained to kids by using an example. Two identical boxes in size and in shape are both filled with objects. One is stuffed with cotton balls, and the other is filled with marbles. The box containing marbles is heavier and denser than the box full of cotton balls. The contents of the denser box are closely arranged together compared to the contents of the other, which has lots of air in between.

Another good example is transferring gas inside a small bottle to a bigger bottle. The gas is less dense in the bigger container. The number of gas molecules is preserved, but it is more spread out when it fills the bigger bottle. There are fewer gas molecules in a set volume compared to when it is occupying the smaller bottle and the molecules are closer together.


Is this answer helpful?

Similar Questions

  • Q:

    What is the relationship between mass and density?

    A:

    Density and mass are mutually dependent physical properties, with density being equal to the amount of mass per unit of volume of any particular object or substance. The mass of any object depends entirely on its overall density, with denser objects having greater mass, for the same volume, than less-dense objects. The mass of an object with uniform composition changes if pieces are added or removed, but its density remains constant. Meanwhile, barring any melting or evaporation, the density of an object tends to change with changes in temperature, while the mass remains the same.

    Full Answer >
    Filed Under:
  • Q:

    What is molar mass?

    A:

    Molar mass is the amount of mass in one mole of a substance. A mole is used in chemistry as a counting unit indicating the amount of ions, atoms, molecules or formula units in a specific chemical sample.

    Full Answer >
    Filed Under:
  • Q:

    What is linear density?

    A:

    Linear density is the amount of mass for every unit of length. This is an attribute commonly associated with one-dimensional objects, although it can also be used in referring to the density of a three-dimensional quantity for a specific dimension.

    Full Answer >
    Filed Under:
  • Q:

    What is the unit of density?

    A:

    Density it the relationship between the volume and mass of a substance. Specifically, it is found by dividing the mass by the volume. The unit of density depends upon which units are used to measure mass and volume.

    Full Answer >
    Filed Under:

Explore