# Density

## Mass

Measurement of the amount of matter(or stuff) in an object Measured in grams (g).

There are 3 states of matter:

See the below illustration for more examples:

## Volume

Measurement of the amount of space an object takes up and it is measured for example in milliliters (ml) or cm^{3}

### Exercise

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

## Density

Density is defined as mass per unit volume.

Question:See the below illustation and determine which square is more dense.

#### How to find the density

- Find the mass of the object
- Find the volume of the object
- Density = Mass (g) / Volume (c
^{3})

### Exercise

Assume the mass of an object is 45 grams and it takes up 9 c^{3} of space, calculate the density.
Solution: **
Density D = M / V = = 45 g / 9 c**^{3} = 5 g/c^{3}

### Exercises

### 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: Summer , 2019