Theory:

Mass is the quantity of matter contained in a body.
 
Mass is a basic property of matter. The mass of each substance is in solid, liquid or gaseous state.
Key takeaways:
 
1. All the matters contains mass, that is why it is known as base quantity.
 
2. Mass is scalar quantity, that is mass only has numerical (magnitude) value.
 
3. The mass of an object is a constant value and it does not vary by the changes of gravity, place, temperature or pressure. 
 
4. The SI unit of mass is kilogram.
 
In the International System of Units, the basic unit of mass is the kilogram (kg).
 
\(1\) kilogram \(= 1000\) gram
\(1\) gram \(= 1000\) mg
\(1\) ton \(= 1000\)  kg
 
In our daily life, we did not use the word mass?
 
For example, we would not ask what is your mass? But we would ask what is your weight?
 
So what is the difference between the mass and weight? Now lets see the difference between them.
 
S.NoDifferentiating propertyMassWeight
1
What it is?
Mass is the quantity of matter contained in a body.
The weight of an object is relevant to the force acting on the object. The force can be either gravity or to a reaction force that holds it in place.
2Is it changeable?The mass of an object is a constant value and it does not vary by the changes of gravity, place.Weight has the capability to change place to place.
3
Quantity
The mass is the fundamental quantity.
The weight is the derived quantity.
4Scalar/VectorThe mass is the scalar quantityWeight is the vector quantity
5How can you measure itThe mass is measured by the physical balance instrument.Weight is measured using spring balance instrument
6UnitKilogramNewton
 
Mass measuring methods:
 
We know that the SI unit of mass is kilogram, in our day to day life we generally use the term ‘weight’ that is actually mean the ‘mass’. Many things are measured in terms of ‘mass’ in the commercial world.
 
Using the below instruments we can determine the mass of an objects:
 
Common beam balance.PNG Physical balance.PNG
 
 
Digital balance.PNG