Halogens Flashcards
Can halogens be found in nature
Halogens are not found in their free state in nature because they are highly reactive.
F - color
yellowish gas
How is F found in nature
Fluoride is a naturally occurring mineral found in all natural waters, both seawater and freshwater, to some extent.
The main use of F?
Fluorine is used to make plastics, and it is important for dental health. It is present in toothpaste and mouthwash.
Cl color
gree-yellowish gas
Cl found in nature
salt, or sodium chloride
Cl main use
kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water
Br color
red-brown liquid
Br main use
respiratory ailments such as asthma, bronchitis, and croup
Br found in nature
in the earth’s crust and in seawater
I color
black solid
I found in nature
Iodine is found in soil and the ocean
I main use
pharmaceutical and disinfectants, printing inks and dyes, catalysts, animal feed supplements, and photographic chemical
What is Hydrochloric acid
Hydrochloric acid is a corrosive colorless acid that is prepared by dissolving gaseous hydrogen chloride in water.
Hydrochloric acid affects humans
may cause eye, nose, and respiratory tract irritation. Eye damage, blindness.
Hydrochloric acid is mainly used in?
Batteries, photoflash bulbs, fireworks, gelatin,
Hydrochloric acid obtained by?
industry and laboratory
Halogenas atpazistamas su kokiu tirpalu
AgNO3
Chloride ions
White precipitate of silver chloride
Bromide ions
Cream precipitate of silver bromide
Iodine ions
Yellow precipitate of silver iodide
Kada reakcija nevyksta?
Pagal aktyvumo lentele, visi elemtai yra aqua, elemnetas maziau aktyvus uz kita lemtai(Br maziau aktyvus uz F)
Kokia spalva kai maisom keakmola su jodu
juodai/melyna
