Derived Units and Density. A piece of metal has the mass of 3.45 kg. What is its mass in g? A container has 2.3 L of gas in it? What is its volume in mL? A container has 750.00 mL of liquid in it. What is its volume in dL?. Bell Ringer…. Many SI units are combinations of quantities
The measure of the resistance of an object to a change in its state of motion OR the amount of “stuff” in an object
An important point concerning measurements is the relationship between mass and weight
What is the density of an object that has a mass of 14 g and a volume of 2 ml?
An empty container weighs 121.3 g. Filled with carbon tetrachloride (density 1.53 g/cm3) the container weighs 283.2 g. What is the volume of the container?
density of ethanol = 0.789 g/cm3
1 gal = 3.78 L
1 lb = 454 gBell Ringer…
In the opening scenes of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces the idol with a bag of sand of approximately the same volume. (density of gold = 19.32 g/mL; density or sand = 2 g/mL)