Define Mass and Weight.

(N/A) Mass of a substance is the amount of matter present in it,while weight is the force exerted by gravity on an object.
The mass of a substance is constant,whereas its weight may vary from one place to another due to the change in gravity.
The mass of a substance can be determined very accurately in the laboratory by using an analytical balance.
The $SI$ unit of mass is kilogram $(kg)$. Its fraction,gram $(1 \ kg = 1000 \ g)$,is used in laboratories due to the smaller amounts of chemicals used in chemical reactions.
Volume has the units of $(\text{length})^3$. So in the $SI$ system,volume has units of $m^3$. However,in chemistry laboratories,smaller volumes are used. Hence,volume is often denoted in $cm^3$ or $dm^3$ units. $A$ common unit,litre $(L)$,which is not an $SI$ unit,is used for the measurement of the volume of liquids. $1 \ L = 1000 \ mL$,$1000 \ cm^3 = 1 \ dm^3$.