PT #2 - DETERMINATION OF DENSITY.docx - PERFORMANCE TASK #2...

PERFORMANCE TASK #2
DETERMINATION OF DENSITIES
DISCUSSION :
The density of an object is defined as its mass per unit volume. Mathematically it can
be expressed as:
Formula : D= M/V Where : D= density , M= mass , V= volume
This usually expressed as grams per millilter (g/ml ) for liquids , grams per cubic
centimeter (g/cm3) for solid , and grams per Liter (g/L) for gases.
I. OBJECTIVES :
After completing the activity , you should be able to:
1. Learn the proper technique in measuring the mass and the volume ;
2. Determine the densities of some solids and liquids , and
3. Apply the rules of significant figures when reporting the weight,
volume and density of each material.
II - INSTRUCTION :
1.0 DENSITY OF LIQUIDS:
1. 1 Density of water
To determine the density of water , first is to get the mass of the water
based from the given value below by obtaining the difference from the
mass of empty cylinder and mass of the graduated and water . Assume that
the volume of water is 40 ml . Compute its density .