Final answer:
Density is reported as g/cm³ for solids and liquids. It's the mass per unit volume, with water having a density of 1 g/cm³, making it a reference point for other materials.
Step-by-step explanation:
The density of the sample should be reported as grams per cubic centimeter (g/cm³). This unit is used specifically for solids and liquids, and is an important value for identifying and comparing materials.
Density is defined as the mass of a substance divided by its volume. In cases where a material has a mass of 300 grams and a volume of 100 cm³, the density would be 3 g/cm³.
It is important to recognize that while the SI unit for density is kilogram per cubic meter (kg/m³), the unit g/cm³ is commonly used in laboratories because it provides a more meaningful reference for comparison, especially since the density of water is exactly 1 g/cm³.
The density of a substance is the ratio of the mass of a sample of the substance to its volume. In this case, the density should be reported as 3 g/cm³. This means that for every cubic centimeter of the sample, there are 3 grams of the substance. Density can be measured for all substances, including solids, liquids, and gases, and it is often reported using the units of g/cm³.