That depends on the substance being studied. "Given unit volume" means 1 liter, for instance, or one cubic centimeter - the specific volume being discussed. Once cubic cm of water would have less matter (is lighter) than one cubic cm of lead (is heavier.) Think about it this way - the more tightly packed a substance is, the more matter there is in one cubic cm of that substance. This is called the substance's DENSITY. If this is a hw problem you're trying to solve, you multiply the volume of substance by that substance's density (which you should find in a table or whatever.) Mind your units!
density is mass/volume
The amount of matter in a given volume is represented by the density of the substance. Density is a measure of mass per unit volume, typically expressed in units like grams per cubic centimeter. By multiplying the volume by the density of the substance, you can calculate the amount of matter present.
The amount of matter in a given volume of space is its D-E-N-S-I-T-Y Its Density NOT Volume!
the amount of matter in a given space; mass per unit volume
This is the density. It is given the symbol ρ, the Greek letter rho. It is defined as mass per unit volume
The amount of substance in a given unit of volume is called concentration. It is typically expressed as the number of moles of a substance per unit volume, such as mol/L (molarity) or mol/cm³.
Density is the mass in a given unit of volume, meter cubed.
Density does have a relation to the amount of mass in an object, but there is a difference. Density is Mass divided by Volume, or D=M%V. Mass is the amount of matter in a substance, while density is the amount of matter in a specified amount of a substance. So, the mass of a lump of lead may be 100 grams, but the density of lead is 11.34 grams per cubic centimeter.
Density is a measure of mass per unit volume, not the total amount of matter in an object. Volume is the space occupied by an object, not the amount of matter it contains. The amount of matter in an object is represented by its mass, which is a measure of the quantity of material it contains.
is a measure of the amount of matter in a given amount of space
Ye.. the concentration of a substance is measured as the amount of substance per unit volume. Accordingly, the amount of a substance in per unit volume is the concentration of the substance.
you should know, gee just look it up in the dictionary!