1. What is the formula? How can density be used to identify materials?

4. Example #1
Some liquid nitrogen has a mass = 14 grams and a volume = 36.3 mL. What is the density?
D = Mass = grams = g/mL
Volume mL

5. Example #2
A substance has a mass of kilograms and a volume of 19.8 L. What is the density?
24.32 kg = 24,320 grams L = 19, 800 mL
D = Mass = ,320 grams = g/mL
Volume ,800 mL

6. Density via Displacement

7. Example #3
An unknown metal having a mass of 435 g was added to a graduated cylinder that contained 40 ml of water. After the addition, the water rose to 78.1 ml. Using this info and a reference table, identify the unknown metal.
Mass = ______ g
Volume = 78.1 ml – 40 ml = _____ ml
D = Mass
Volume
Identity of metal = _______
435
38.1
g___
435
38. 1 mL
Lead