Sub-Atomic Particles
Chapter Name : Structure Of Atom |
Sub Topic Code : 102_11_02_01_04 |
Topic Name : Sub-Atomic Particles |
|
Sub Topic Name : Discovery Of Protons And Neutrons |
|
Introduction
With better
technology, Dalton’s theory was soon disproved. It was found that atoms are
made up of more than just electron. What are these sub-atomic particles that
constitute an atom?
Pre-Requisites:
Dalton’s atomic
theory, Sub-atomic particles, Discovery of electron
Activity:
Positive charges are
added by protons
Real Life Question:
Other than electrons,
what makes up an atom?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Canal rays | Canal rays |
| Proton | Smallest positive ion obtained from hydrogen atom |
| Electrically neutral particles with a mass greater than proton | Electrically neutral particles with a mass greater than proton |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| 3D atomic model showing the sub-atomic particles | 3D atomic model showing the sub-atomic particles |
Real life uses :
Atoms are the
building blocks of all matter, and it is thus very important to know what
constituents an atom. Manipulation of these sub-atomic particles is what
constituents the upcoming nano-technology.
Places to visit :
Atoms can only be
seen under an electron microscope. So visit your chemistry laboratory and check
out how an atom looks if your lab has an electron microscope.
Practical examples around us
| Examples | Explainations |
|---|---|
| Matter | All matter, air, water soil have atoms containing protons and neutrons |
What you learn in Theory:
Neutrons and protons
are very important sub atomic particles, and hence its discovery is an
interesting story altogether.
What you learn in Practice:
Neutrons and protons
are very important sub atomic particles, and hence its discovery is an
interesting story altogether.