Atomic mass and density are different properties that contribute to the overall weight or heaviness of an object, but they are not directly comparable to determine which makes things heavier. Here's a brief explanation of each:
Atomic mass: Atomic mass refers to the mass of an individual atom of an element, expressed in atomic mass units (amu) or unified atomic mass units (u). It represents the combined mass of protons, neutrons, and electrons in an atom. Atomic mass is listed on the periodic table and is useful for determining the relative masses of different elements.
Density: Density is a measure of how much mass is contained within a given volume of a substance. It is calculated by dividing the mass of an object by its volume. Density is typically expressed in units such as grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³). It provides information about how tightly packed the particles are within a substance.
To determine which property contributes to the overall weight or heaviness of an object, both atomic mass and density should be considered. If you have two objects with the same volume (e.g., two cubes of the same size), the object with a higher density will typically be heavier because it contains more mass within the given volume. However, if the objects have different volumes, their densities alone cannot determine which one is heavier. In that case, the total mass or weight of the objects would depend on both their densities and volumes.
In summary, while atomic mass and density are both factors that contribute to the weight or heaviness of an object, comparing them directly to determine which makes things heavier is not appropriate.