CHAPTER 2 Acids, Bases, and Salts |
Chapter-2 (Acid, Bases, and Salts)
You should know These Facts
Litmus solution is a purple dye, which is extracted from lichen, a plant belonging to the division Thallophyta, and is commonly used as an indicator. When the litmus solution is neither acidic nor basic, its colour is purple.
Lichen Thallophyta
There are many other natural materials like red cabbage leaves, turmeric, coloured petals of some flowers such as Hydrangea, Petunia and Geranium, which indicate the presence of acid or base in a solution. These are called acid-base indicators or sometimes simply indicators.
Red Cabbage Leaves Turmeric Plant
All bases do not dissolve in water. An alkali is a base that dissolves in water. They're soapy to touch, bitter, and corrosive. Never taste or touch them as they may cause harm.
Geranium
Acids in other planets
The atmosphere of Venus is made up of thick white and yellowish clouds of sulphuric acid. Do you think life can exist on this planet?
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Nature provides neutralization options
Nettle Plant
This Plant is acidic in nature and grows in wild areas
Nettle is a herbaceous plant that grows in the wild. Its leaves have stinging hair, which causes painful stings when touched accidentally. This is due to the methionic acid secreted by them. a traditional remedy is rubbing the area with the leaf of the dock plant, which often grows beside the nettle in the wild. Can you guess the nature of the dock plant?
Dock Plant
This Plant is basic in nature and helps to remove the effect of Nettle Plant