Can Matter Change Its State?
Chapter Name : Matter In Our Surroundings |
Sub Topic Code : 102_09_01_04_02 |
Topic Name : Can Matter Change Its State? |
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Sub Topic Name : Effect Of Change Of Pressure |
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Introduction
Discuss “How can we reduce space between matter particles”
Pre-Requisites:
Matter is made of particles, Particles have space between them
Activity:
In tire we fill air and after some time it gets deflated and changes shape. When we fill, if we keep on filling the shape of tire stops increasing after some time, but if you watch the meter the pressure keeps on increasing.
Real Life Question:
“Have you heard of solid carbon dioxide (CO2)? It is stored under high pressure.”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| On increasing pressure | Space between particles decreases |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A eraser, a balloon filled with water, a balloon filled with air | Apply force separately on each and note your observations |
Real life uses :
This effects of pressure helps us to control different properties of matter
Practical examples around us
| Examples | Explainations |
|---|---|
| Filling air in tires | After a time the shape stops changing thus it means distance between the particles is decreasing |
| Cold drinks | When you shake it the pressure inside increases and the cold drink erupts out. |
What you learn in Theory:
Effect of pressure on states of matter
What you learn in Practice:
Space between particles decrease when we apply pressure