mass

Activity : What is required ? Two identical glasses, water What will you do ? Take two identical glasses, Fill one of them half with water and fill the second fully. Lift these two glasses at a time in different hands. Which one is felt heavier ? A fully filled glass is found to be heavier then half filled..

Atomic Mass and Molecular Mass

Atoms of every element has different mass, hence every element has its own characteristic atomic mass. It is very difficult to measure the mass of atom having extremely small volume. With the help of Mass Spectrometry the atomic weight of some atoms can be obtained. These weights are taken as a standard..

mass defect or mass loss

The difference in the actual mass of the nucleus and the total mass of nuclear particles (protons and neutrons) present in the nucleus is called mass defect. It is observed that the actual mass of an atom of an element is invariably less than the sum of the masses of protons, neutrons a..

Atomic mass and Molecular mass

Atomic mass and molecular mass is only a number. This number indicates the relative mass. In daily life, the masses of required useful substances are mentioned in gram or kilogram. To calculate and mention things like kites, fruits, books etc., we use Dozen (12 units), Gross (144 units) etc. These are unit..

Inertial mass and gravitational mass '

When a force F is applied on a body, it overcomes inertia and produces an acceleration a. The measure of inertia of the body is its mass m. In the equation F = ma, the mass m is called inertial mass. Inertial mass m = a Thus, inertial mass of the body is the ratio of the magnitu..

Molar mass or molecular mass

MOLAR MASS: It is defined as the mass of one mole of given substance is known as molar mass. In other words also known as molecular weight.Because the molar mass is equal to the mass of one molecule of the given substance. CALCULATION OF MOLAR MASS OR MOLECULAR ..

Atomic Mass and Molecular Mass

EQUIVALENT MASS

Equivalent mass of an element is defined as the number of parts by mass of that element which can displace or combine with 1.008 parts by mass ofhydrogen or 8 parts by mass of oxygen or 3 5.46 parts by mass of chlorine or one equivalent mass of any other element. It is only a relative n..

Molecular Mass

We have seen in the previous sections that atomic mass of an element is expressed in the unit dalton, u, as relative mass with 12 C as the reference. This idea can be extended to molecular mass. Molecular mass (molecular weight) is the relative mass of a molecule with reference to ' 12 C , ..

Mass of a substance

Each thing or a substance is made of mass. We can touch, smell and taste solid or liquid substance. Mass is present in all substances. The quantity of mass present in any substance is called the mass of the substance. We are not able to see gaseous substance but can experience it by touch or smell. Thus, g..

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