Density

Mass

Measurement of the amount of matter(or stuff) in an object Measured in grams (g).
There are 3 states of matter:

Solid
Liquid
Gas

See the below illustration for more examples:
3 States

Volume

Measurement of the amount of space an object takes up and it is measured for example in milliliters (ml) or cm³
volume

Exercise

Question: See the below illustation and determine which one would have the greater volume? The greater mass?
feather-rock

Density

Density is defined as mass per unit volume.
Question:See the below illustation and determine which square is more dense.
square

How to find the density

Find the mass of the object
Find the volume of the object
Density = Mass (g) / Volume (c³)

Exercise

Assume the mass of an object is 45 grams and it takes up 9 c³ of space, calculate the density. Solution: Density D = M / V = = 45 g / 9 c³ = 5 g/c³

Exercises
Here is a list of questions related to density
Ways to Affect Density
Logically speaking:

Increase the mass → increase density

Decrease the mass → decrease in density

Practice: Here is an exercise about density

Check your answers here.

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Date of last modification: 2022