Principle

In the determination of the density of solids in Experiment ME
1.5, the density was determined as the quotient of mass and volume
from a weighing to determine the mass and measurement of volume by
different methods. As a prerequisite for this experiment, it was
assumed that the mass and volume of water are numerically
identical, i.e. that the quotient of both - the density - has a
value of 1 g∕cm3.

This should now be confirmed experimentally by the same
method: weighing a quantity of a material and measuring its
volume.


First the students are to determine the density of water from a
volume measurement in a graduated cylinder, a weight determination
and then a calculation.

The students should then determine the density of a table salt
solution (approx. 10%) which they made themselves by the same
method.