[DOC] [TLE] What is mass per unit volume? | Reference.com [PAR] Density is mass per unit volume, and the SI (or Systeme International) unit is 
kilogram per cubic meter, abbreviated as kg/m^3. This means that finding the... [DOC] [TLE] What does the mass of a substance divided by the unit volume equal ... [PAR] Density is the mass of a substance per unit volume. The density of water is 1 
gram per milliliter. Substances with densities above 1 gram per milliliter sink in... [DOC] [TLE] Number density - Wikipedia [PAR] In physics, astronomy, chemistry, biology and geography, number density is an 
intensive ... Volume number density is the number of specified objects per unit 
volume: ... In SI units, number density is measured in m3, although cm3 is often 
used. ... Note that the ratio M/NA is the mass of a single atom or molecule in kg. [DOC] [TLE] What is amount of substance concentration? - Definition from WhatIs ... [PAR] Amount of substance concentration, often called simply concentration, is a 
quantitative measure of the number of atoms per unit volume in a sample of a 
matter. ... one mole of oxygen atoms, because the mass of an oxygen atom is 
approximately 16 times the mass of a hydrogen atom. ... People Who Read This 
Also Read. [DOC] [TLE] Density and Center of Mass [PAR] Density of population is measured in quantity per unit area or per unit volume. 
For example ... Density of a substance is measured as mass per unit volume. For 
... population density P = h(q) people/km, is a function of the distance q km from 
the... [DOC] [TLE] Density | Define Density at Dictionary.com [PAR] the number of inhabitants, dwellings, or the like, per unit area: The commissioner 
.... Mass density is a measure of the mass of a substance per unit volume. [DOC] [TLE] Mass, Density, and Volume - Dictionary definition of Mass, Density ... [PAR] The volume of a cube, for instance, is a unit of length cubedthat is, length 
multiplied ... In the SI system, density is typically expressed as grams per cubic 
centimeter (g/cm3), ... Most people who are not scientifically trained tend to think 
that mass and .... To compare two substances containing the same number of 
atoms or... [DOC] [TLE] Density and How to Slice a Region - Gilbert Public Schools [PAR] A population density is measured in, say, people per mile (along the edge of a 
road), or people per unit area (in a city), or bacteria per cubic centimeter (in a test 
tube). The density of a substance (e.g. air, wood. or metal) is the mass of a unit 
volume ... The number of people living next to it varies as it gets farther from the 
city. [DOC] [TLE] What is Matter? - NYU [PAR] People describe objects in many ways using size, shape, colors, and textures. ... 
The unit for mass is a gram. ... Physical properties- The measurement of mass 
and other characteristics that ... Density is the mass of a substance per unit 
volume. [DOC] [TLE] Notes on Measures - 2 - Cleave Books [PAR] For any substance, the density is a measure of the mass of a unit volume of that 
substance. So, it could be ... 'grams per litre' or 'kilograms per cubic metre' etc. ... 
They both measure force per unit area. ... The concept of speed is familiar 
enough to most people. ... A less familiar measure of speed is the use of a Mach 
number. [DOC] [TLE] Density - definition of density by The Free Dictionary [PAR] The quantity of something per unit measure, especially per unit length, area, or... 
... The mass per unit volume of a substance under specified conditions of ... The 
number of individuals, such as inhabitants or housing units, per unit of area. .... 1. 
the number of items, people etc found in a given area compared with other areas
... [DOC] [TLE] Densities - definition of densities by The Free Dictionary [PAR] The

Question: This measurement is the mass of a substance per unit volume, or the number of people per unit of area
Answer: Density