The Gaseous State
Chapter Name : States Of Matter |
Sub Topic Code : 102_11_05_05_01 |
Topic Name : The Gaseous State |
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Sub Topic Name : The Gaseous State |
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Introduction
• Gas is the simplest state of matter. • Periodic table shows that only eleven elements exist as gases under normal conditions Gases are highly compressible. • Gases exert pressure equally in all directions .Gases have much lower density than the solids and liquids. • The volume and the shape of gases are not fixed. These assume volume and shape of the container.
Pre-Requisites:
molecule, matter,
Activity:
Boling water. Liquid water becomes vapor when it is boiled. Water changes into its gaseous state
Real Life Question:
Why does a balloon inflate?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Gas | Gas is the simplest state of matter. It is highly compressible and least dense. It takes the shape and volume of the container. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Balloon | Blow air into the balloon and see how it expands in all directions. |
Real life uses :
Gas is easily compressed at high pressure and it still remains a gas. LPG and CNG can be seen in the cooking gas cylinders and in CNG filling stations.
Places to visit :
kitchen
Practical examples around us
| Examples | Explainations |
|---|---|
| Blowing air into a balloon | Air we blow into a balloon puts pressure uniformly in all direction making the balloon swell in a round shape. |
What you learn in Theory:
Gas is the simplest state of matter. Periodic table shows that only eleven elements exist as gases under normal conditions Gases are highly compressible. Gases exert pressure equally in all directions .Gases have much lower density than the solids and liquids. The volume and the shape of gases are not fixed. These assume volume and shape of the container.
What you learn in Practice:
Gases have unique physical properties which makes them highly useful.