1. Density and Units

2. K ing (Kilo-)
H enry (Hecta-)
D ied (Deca- )
B y (BASE UNIT: m, L, g)
D rinking (deci - )
C hocolate (centi -)
M ilk (mili - )

3. Density
Density- Compactness; how closely set particles are; a measure of mass per volume
Density = Mass/Volume
(broken heart)

4. Units Mass- grams Volume- mL or cm3 Density- g/ml or g/cm3
Volume of a solid= L x W x H

5. Sink or Float?? Density of water is 1 g/ml
If density is less than 1, it will float
If density is more than 1, it will sink
Displacement- the amount
of change in volume when
object is placed in the grad.
cylinder

6. Problems
1. What is the volume of a tank that can hold 754 Kg of methanol whose density is 0.788g/cm3? 2. CaCl2 is used as a de-icer on roads in the winter. It has a density of 2.50 g/cm3. What is the mass of 15.0 L this substance? 3. A 147 g piece of metal has a density of 7.0 g/ml. A 50 ml graduated cylinder contains 20 ml of water. What is the final volume after the metal is added to the graduated cylinder?