Writing Chemical Formulae
Chapter Name : Atoms And Molecules |
Sub Topic Code : 102_09_03_04_01 |
Topic Name : Writing Chemical Formulae |
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Sub Topic Name : Formulae Of Simple Compounds |
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Introduction
Compounds are made up of two different elements. Formulas of simple compounds are written by using the symbols and the valencies of elements.
Pre-Requisites:
Atom, matter, element, compound
Activity:
Compounds are represented by their chemical formulas.
Real Life Question:
How do you identify a compound?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Chemical formula | A chemical formula represents a molecule of a compound. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Periodic table | Use the periodic table to see the symbols of elements. |
Real life uses :
Chemical formulas of molecules help to identify different molecules.
Places to visit :
Chemistry lab.
Practical examples around us
| Examples | Explainations |
|---|---|
| Water is denoted by the formula H2O | Water is denoted by the symbols for hydrogen and oxygen. It is a molecule made of hydrogen and oxygen. |
What you learn in Theory:
Compounds are made up of two different elements. Formula of simple compounds is written by using the symbols and the valencies of elements.
What you learn in Practice:
Compounds are identified by their chemical formulas.