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Chloride

physical science Maturity 7-9 Next article →

Chloride is a very important part of our world. It can be a single chloride ion or part of a larger molecule.

Chloride-ion-3D-vdW
Chloride-ion-3D-vdW

A chloride ion is a chlorine atom with a negative charge. This ion is colorless and is much larger than a regular chlorine atom. Most chloride salts, like the salt we use on food, dissolve easily in water. Some special salts, such as silver chloride, do not dissolve well at all. These different forms allow chloride to do many different jobs in nature.

NaCl polyhedra
NaCl polyhedra

Inside your body, chloride works like a tiny helper for your cells. It is an essential electrolyte found in all of your body fluids. Chloride helps maintain a balance of acids and bases in your system. It also helps your nerves send important signals through your body. Your stomach even needs chloride to produce hydrochloric acid for digestion.

Chloralkali membrane
Chloralkali membrane

To keep things steady, your kidneys help regulate the amount of chloride in your blood. They do this by moving chloride through tiny paths called tubules.

Scientists have studied how chloride behaves for a long time. They know it can be changed through a process called oxidation. One way this happens is in the chlor-alkali process. This method turns salt solutions into chlorine gas and sodium hydroxide.

Hypochlorite-3D-vdW
Hypochlorite-3D-vdW

This process uses a lot of the world's energy to work. It is a very important way to make many useful chemicals. We use these chemicals to make all sorts of different materials.

Chloride is found in many places in the natural world. You can find a lot of it in seawater. The concentration in seawater is about 19,400 mg per liter.

Hypochlorite-3D-vdW
Hypochlorite-3D-vdW

You can also find it in places like the Great Salt Lake in Utah. Another place is the Dead Sea in Israel. Some minerals, like halite or sylvite, are made of chloride salts. These minerals are often found in very dry places or deep underground.

We use chloride in many ways in our daily lives. Calcium chloride is a salt used to melt ice on roads. It can also be used to remove dampness from a room.

In the ocean, chloride is a big part of how salt water works. People even use chloride to check if river water is clean. This is because it can help show if there is sewage in the water. It is a small thing that makes a huge difference everywhere.

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🖼️ Images & Media (7)
File:Chloride-ion-3D-vdW.png
Chloride-ion-3D-vdW.png
File:Hypochlorite-3D-vdW.png
Hypochlorite-3D-vdW.png
File:Chlorite-3D-vdW.png
Chlorite-3D-vdW.png
File:Chlorate-3D-vdW.png
Chlorate-3D-vdW.png
File:Perchlorate-3D-vdW.png
Perchlorate-3D-vdW.png
File:NaCl polyhedra.png
NaCl polyhedra.png
File:Chloralkali membrane.svg
Chloralkali membrane.svg
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