Phosphine
Chapter Name : The P- Block Elements |
Sub Topic Code : 102_12_07_07_01 |
Topic Name : Phosphine |
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Sub Topic Name : Phosphine |
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Introduction
We discuss the preparation, physical as well as chemical properties, purification and uses of phosphine.
Pre-Requisites:
Inflammable, Oxidizing Agent, Decomposition, Combustion, Ignition.
Activity:
Phosphine is the main component in the smokescreens used by the police to stop rioters.
Real Life Question:
How do we signal approaching ships for a warning? What are military smokescreens made of?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Holme's Signals | A method of signaling approaching ships by using phosphine's reaction with water to create a red glare. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| 3D structures or toys | To see in a physical dimension how the structure of phosphine is. |
| Video aids | To understand the reactions involved in the topic. |
| Flash cards | To help recall the reactions. |
Real life uses :
In signaling ships and using smokescreens.
Places to visit :
During protests in the streets, police often resort to smokescreens, as do defense personnel. These smokescreens are mainly composed of phosphine.
Practical examples around us
| Examples | Explainations |
|---|---|
| How are ships warned? | Holme's signals, composed of phosphine compounds, are used to create a red glare and warn ships. |
| Smokescreens | They also use this combustible property of phosphine to use smokescreens for military purposes. |
What you learn in Theory:
The methods of preparation, physical properties, chemical reactions and uses of phosphine.
What you learn in Practice:
The functioning of the Holme's signals and smokescreens, which use phosphine as an essential component.