Measuring Volume

Measuring Volume

___3---> is something something cube

Example: mm3 is mm cube

 

 

• Units for volumes include mm3, cm3, m3and km3. 

• For liquids, the volume is measured in terms of millilitres (ml) or the litres (l). 

• 1 litre = 1 000 ml = 1000 cm3

 

  

a) Measuring cylinder: 

Available in a variety of sites - 50 ml, 100 ml, 250 ml, 500 ml and 1000 

ml. This instrument can be made from plastic and glass. As this 

instrument is not very accurate, it is used in crude measurements and transferring of liquids.

b) Burette 

This instrument is a long narrow cylinder with a tap at the bottom which allows liquid to flow out in drops through a jet. 

 

Method of Reading: 

• Initial reading of the level of liquid is noted.  

• Required volume is then released into a container 

placed under the burette. 

• The burette can measure to an accuracy of 0.1 cm3

 and for half the smallest division will be 0.05 cm3

c) Pipette 

Pipette is more accurate than burette. This instrument is used to measure specific volumes of liquids such as 10 cm3, 25 cm3 and 50 cm3.

d) Measuring flasks 

Measuring flasks is actually less specific and accurate. This is used to measure large volumes.  

Measuring Cylinders

 

Burette

Pipette

Measuring Flask