Thermodynamic Terms
Chapter Name : Thermodynamics |
Sub Topic Code : 102_11_06_01_02 |
Topic Name : Thermodynamic Terms |
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Sub Topic Name : Types Of System |
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Introduction
• The systems can be classified according to the movements of matter and energy in or out of the system. • There are three types of systems: open, closed, and isolated. • In an open system, there is exchange of energy and matter between system and surroundings • In a closed system, there is no exchange of matter, but exchange of energy is possible between system and the surroundings. • In an isolated system, there is no exchange of energy or matter between the system and the surroundings.
Pre-Requisites:
Energy, transformation, equilibrium, thermodynamic system
Activity:
Various types of systems are present around us. Example a boiling pot of water is an open system. A boiling water pot with a lid on is a closed system.
Real Life Question:
Does a boiling pot of water a thermodynamic system?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
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| Thermodynamic system | • A system in thermodynamics is a space in which observations are made and remaining space constitutes the surroundings. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Water, food colour, glass | Take water in a glass and add food colour into it. The glass of water + food color is the system and the room where the glass is kept is the surroundings. This is an open system as there is exchange of matter and energy. |
Real life uses :
Thermodynamic systems help energy transformations. E.g. converting chemical energy of battery to electrical energy for lighting a torch.
Places to visit :
Kitchen
Practical examples around us
| Examples | Explainations |
|---|---|
| Boiling pot of water | Water boiling in a pot is example of a thermodynamic system. If you put a lid on it, it becomes a closed system. |
What you learn in Theory:
Thermodynamic systems are classified according to the exchange of energy or matter between the system and the surroundings.
What you learn in Practice:
There are a huge number of small thermodynamic systems everywhere.