Final answer:
The density of the green object in the PhET Density Lab is calculated using the formula density = mass/volume, with values measured through the water displacement method. Density is an intensive property that helps determine the composition of an object.
Step-by-step explanation:
The density of the green object in the PhET Density Lab can be determined through a water displacement approach. In this experiment, you first measure the mass of the green block. Then, place the green block in the water to measure the water displacement, which gives you the volume of the object. Using these two pieces of data, you can calculate the density of the object with the formula: density = mass/volume.
As you learned from the simulation, density is an intensive property of matter that is defined as the ratio of mass to volume. This property helps to identify the composition of an object and is independent of the amount of material present. For example, if a green object has a mass of 10 grams and displaces water to a volume of 8 milliliters, its density would be calculated as 10 g / 8 mL, which is 1.25 g/mL.