Methods of measuring density of liquids

Class practical A simple method for comparing the density of liquids. Apparatus and materials For each group Measuring cylinders, 1ml or 2ml, clean and dry, 2. The density of a liquid is far easier to measure than that of a solid or gas. The volume of a solid can be difficult to obtain, while the mass of a gas can rarely be measured directly.

You can, however, measure the volume and mass of a liquid directly an for most applications, simultaneously. The most important parts of measuring the density of a liquid are ensuring you calibrate the scale.

The hydrometer (aerometer) is a glass body which is dipped into the sample. When measuring liquids and regularly shaped solids, mass and volume can be discovered by direct measurement and these two measurements can then be used to determine density. Using a pan balance, determine and record the mass of an object in grams. Using a vernier caliper or ruler, measure the length, depth and width of the object in centimeters. Multiply these three measurements to find the.

This demonstration illustrates the methods for measuring the density of solids and liquids. Using a volumetric flask and an analytical balance, the density of ethanol can be determined. Using a graduated cylinder, analytical balance, and water as the displaced liquid , the density of zinc metal can be determined.

The tremendous diversity of density measurement applications called for ever better methods for determining mass per volume (or density ) in order to measure density faster, with higher precision, less sample volume required or at other defined temperatures besides ‘room temperature’. In the following experiment, the identities of three colorless liquids will be determined by measuring the densities of the liquids by two methods and then comparing the density of the liquid to literature (reference) values for the three liquids. The identity of an unknown metal will be established in a similar manner. Density is a measure of how compact the mass in a substance or object is. Density of a Liquid : Learn to calculate the density of an unknown liquid from knowing its mass and volume using a graduated cylinder and triple beam balance.

Learn what a hydrometer is, and what it can do. The molecules of different liquids have different size and mass. The mass and size of the molecules in a liquid and how closely they are packed together determine the density of the liquid.

Just like a soli the density of a liquid equals the mass of the. How to Test the Specific Gravity of Liquids In this Article: Measuring Specific Gravity with a Hydrometer Calculating Specific Gravity by Weight Calculating Specific Gravity by Density Community QA Specific gravity, also referred to as relative density , is used to relate the weight or density of liquids to that of water. Either by itself, if it’s a soli or in its container, for liquids and gasses, measure the mass using your scale. Record the mass in grams, subtracting the mass of any container you have used. To measure the density of liquids and solids.

Use a ruler to measure the length (l), width (w) and height (h) of the object. Method 1: A regular shaped object. Place the object on the top. FIELD: measurement technology.

SUBSTANCE: method can be also used in chemical and food industry for measuring variable level of liquid with unknown density in.

Therefore, the density of the object can be reported as 4. The earliest methods for measuring viscosity were based on using capillary tubes and measuring the time it took for a volume of liquid to pass through the length of the tube. These developments were in place before the turn of the 20th century and are known as Ostwald or Ubbelohde viscometers. Tap Density and Vibratory Packing Density These are very similar methods for determining the bulk density of a collection of particles under specific conditions of packing.