# Measurements

## Any Difference between mole and molecule? |Any difference between mol or mole?

While studying the chapter on gas laws you must have come across the term ‘mole’ or ‘mol‘. You may have seen gram-mol as well in that chapter. I find many students confused with mole (or mol) and molecule. Here we will discuss and explain the concept of mole or mol with some examples. 1> In […]

## How does Density differ from Relative Density?

In this post, we will discuss on density and relative density physics of a substance. We will also look into their differences. So let’s start. What is the difference between density and relative density? Density is the mass per unit volume. So if we divide the mass of a substance with its volume then we […]

## Mass and Weight- are they same or different?

What are Mass and Weight ? Are they same? Often we mess up with these two while discussing physics fundamentals or nymerical problems. To answer these questions we will first discuss on the concepts of mass and weight. As you get the basics of these 2 physical quantities, certainly you will be able to tell […]

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