Chemical Changes VS Physical Changes | HOW Does It Happens?

What are Physical And Chemical Changes?

Before understanding this, you must know what is a change in science.

So, a change is basically a different form or view of any object. You tear a paper, its a change. You burn wood, its a change. How? Because you are changing their forms either physically or chemically.

So, we now know what a change is. Next we need to have some knowledge on atoms for this.

Basically, atoms are the smallest group composed of subatomic particles which are present inside everything you can name. I know this is the worst definition you must've heard. But don't worry. To learn and have a complete grasp and grip on the knowledge of atoms, visit this post.

https://enlightenedscience.blogspot.com/2021/10/atoms-electrons-protons-and-neutrons.html 

So, we know two things. First, what is a change and second, what are atoms.

So, now we are in a position to understand what are Physical Changes and what are chemical changes.

So, in chemistry, well, to be more precise, atomic chemistry, there exists "bonds" like Covalent Bonds, Ionic Bonds and Metallic Bonds.

So what are these bonds. Basically any bonding is a type of electron sharing for "stability".

Everything in the nature wants to be stable. And when an atom shares or gains or loses an electron, then it is called a chemical change in nature.

So, remember, whenever there is any electron sharing between the atoms of the object, the change is termed to as chemical change.

And what is a physical change. Well, it is the vice versa! If there is no such bonding or electron sharing, then the particular change is termed to as a physical change.

In simple words, whenever a new substance is formed, we call it a chemical change. And if there is no new substance, then it is a physical change.

But the condition is that these new substances should be altered by the atomic activities like electron bondings etc.

So, now you know what are chemical and physical changes. I have answered the question. But does this definition help in real life. Kind of no because how will you tell this object's atoms have done electron sharing as you can not see atoms with your naked eye. That's like impossible.

So, here we do science in one sense to know whether the atoms of the changing object are sharing their electrons or not.

Let us take some real life examples.

Like, a burning wood. A new substance is born at the surface level as well as at the atomic level as well, Ash. So it is a chemical change, of course. 

Tearing paper. It doesn't show any new substance forming. You tear a paper. It remains paper, it doesn't gets converted into milk or something. So, clearly tearing a paper does not show any new substance either at the atomic or the surface level. So it is a physical change.

So, now let's take one last example.

Take water. Add fat and protein globules to it. Magically, it becomes milk. So is It a chemical change? Surprisingly, no. How? Why!

See, it does shows a change at the surface level, but as I told you, if there is a change at the atomic level of the sharing of electrons, then that particular change is known as a chemical change. A new substance milk do forms here but there is no electron sharing or bonding. So, that's why, dear reader, this change is a physical change!

That's all for this chemistry change! 

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