1. Determining if an object will float or sink
Density
Determining if an object will float or sink

2. What is density??
Definition - Density is a measure of how much mass is contained in a given unit volume

3. What is volume??
Definition – Is the amount of space a substance takes up.
FORMULA for a rectangular solid – L x w x h

4. What if its NOT a rectangular solid??
Water displacement –
*Using a graduated cylinder determine the difference in volume before and
after the object was put in
* The difference = the
Volume of the object
DETERMINE THE VOLUME
OF THE FISH: __________
6 mL

5. Let’s practice density calculation…
Units:
Density: g / mL or g / cm3
Volume: mL or cm3
Mass: grams

6. Let’s Practice one
A student determines that a piece of an unknown material has a mass of g and a volume of 7.57 mL.  What is the density of the material?

7. Let’s try another one…
Mercury has a density of 13.5 g/mL.  How much space would 50.0 g of mercury occupy?