Uncertainty In Measurement
Chapter Name : Some Basic Concepts Of Chemistry |
Sub Topic Code : 102_11_01_04_01 |
Topic Name : Uncertainty In Measurement |
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Sub Topic Name : Scientific Notation |
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Introduction
Scientific notation is a way of expression of complicated number we come across everyday in dealing with atoms, molecules and their mass.
Pre-Requisites:
Basic idea about atoms and molecules. Mathematical calculation in exponential form.
Activity:
Number of atoms and molecules can be easily expressed in Scientific notation. Exponential form of a number makes it easily operational.
Real Life Question:
How do we calculate the number of molecules of water present in a glass of water?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Exponential form | A mathematical form of writing a number in terms its factors, thereby making it simpler. For ex: 3x3x3 can be written as 33. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Cup of Tea | To separate quantity of ingredients. |
Real life uses :
Use to calculate and determine the mass and number of a very small or big quantity.
Places to visit :
Chemistry lab, Kitchen, Garden
Practical examples around us
| Examples | Explainations |
|---|---|
| Medicine preparation | A very small quantity of numerous elements is used to prepare a medicine. Such quantity is only operated in exponential form. |
What you learn in Theory:
To express a number in its Scientific Notation.
What you learn in Practice:
To add very large and small quantity.