A changeable quantity is called a variable. Variables can take different values and are typically represented by letters in mathematical equations.
A quantity of time can also be called a duration or a span of time.
The total quantity of an object's matter is called its mass.
The quantity of mass contained within a volume is called its Density. Actually the quantity of Mass per unit Volume is Density , by Definition.
A scalar.
The measure of the quantity of matter in an object is called mass. Mass is commonly measured in units such as kilograms or grams.
Variable
The answer is variable
FIELD
A quantity supplied is more than quantity demanded its called A Surplus.
diapers are often changeable
by "Changeable" do you mean blending? if so the Chameleon
I think it is changeable
The root word of "changeable" is "change."
The quantity of matter in an object is called mass.
They are the Amendments. There are currently 27 Amendments to the US Constitution. The first 10 of which are called the Bill of Rights.
able is the root in the word changeable
The difference between actual quantity and standard quantity is called the material quantity variance.