How to find the density of a glass block (glass slab) , by calculating its volume and mass?
Answers
Density (D) is a quantity defined as mass (m) per unit volume (v): D = m ÷ v. Since these three quantities are related, you can find one of them if you know the other two. This is more helpful than it sounds because density is often a known quantity that you can look up, assuming you know the composition of the material. Calculations are straightforward for solid objects, but things get more complicated for liquids, whose density changes with temperature, and for gases, for which density is dependent on temperature and pressure.
Use Consistent Units
The equation relating density, mass and volume is straightforward and allows you to calculate the density of a material if you measure its mass and volume. The only caveat is that you have to make the measurements in the same system. For example, if you measure mass in kilograms, you should measure volume in cubic meters, and if you measure volume in quarts, you should measure mass in pounds. The three systems you're likely to use are CGS (centimeters, grams, seconds), MKS, (meters, kilograms, seconds) and British Imperial. The most used units for densities in these three systems are:
CGS – grams/cubic centimeter or grams/milliliter
MKS – kilograms/cubic meter
British – pounds/cubic foot
Density (D) is a quantity defined as mass (m) per unit volume (v): D = m ÷ v. Since these three quantities are related, you can find one of them if you know the other two. This is more helpful than it sounds because density is often a known quantity that you can look up, assuming you know the composition of the material. Calculations are straightforward for solid objects, but things get more complicated for liquids, whose density changes with temperature, and for gases, for which density is dependent on temperature and pressure.
Use Consistent Units
The equation relating density, mass and volume is straightforward and allows you to calculate the density of a material if you measure its mass and volume. The only caveat is that you have to make the measurements in the same system. For example, if you measure mass in kilograms, you should measure volume in cubic meters, and if you measure volume in quarts, you should measure mass in pounds. The three systems you're likely to use are CGS (centimeters, grams, seconds), MKS, (meters, kilograms, seconds) and British Imperial. The most used units for densities in these three systems are:
CGS – grams/cubic centimeter or grams/milliliter
MKS – kilograms/cubic meter
British – pounds/cubic foot