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Chloride

physical science Maturity 7-9

Salt is in the sea.

NaCl polyhedra.png
NaCl polyhedra.png
It is in your body too. It helps your nerves work. It also helps your stomach. We need it to stay well. Do you like salt on your food?

36 words

Chloride is found in seawater.

NaCl polyhedra.png
NaCl polyhedra.png
It is also in your body. It is in all your body fluids. It helps your nerves send messages. It also helps your stomach work.
Chloride-ion-3D-vdW.png
Chloride-ion-3D-vdW.png
This helps your body stay healthy. Some salts like this melt ice on roads. You can also find it in table salt. It is a part of many minerals. This tiny thing is very important for life.

70 words

Chloride is a tiny part of many different things.

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Chloride-ion-3D-vdW.png
It can be a chloride ion. This is a chlorine atom with a negative charge. It can also be part of a molecule.

Chloride is very important for living things. It is found in all body fluids. It helps your body keep a good balance. It also helps nerves send signals. Your stomach needs it to make acid.

NaCl polyhedra.png
NaCl polyhedra.png

In nature, you find much chloride in seawater. You can also find it in the Great Salt Lake. Many chloride salts dissolve in water. Table salt is one example. We call this sodium chloride.

Some salts have special uses. Calcium chloride is a salt used to melt ice. It can also help keep roads strong. People use it to take dampness out of rooms.

Chloralkali membrane.svg
Chloralkali membrane.svg

Factories use a way called the chlor-alkali process. This way turns salt into other useful things. It uses a lot of power to work. This process makes chlorine and sodium hydroxide.

167 words

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.png
Chloride-ion-3D-vdW.png
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.png
NaCl polyhedra.png

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.svg
Chloralkali membrane.svg
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.png
Hypochlorite-3D-vdW.png
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.

Chlorite-3D-vdW.png
Chlorite-3D-vdW.png
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.

406 words

Chloride is a chemical term that describes many different types of molecules or compounds. It can refer to a chloride anion, which is a negatively charged chlorine atom. It can also describe a neutral chlorine atom that is covalently bonded to other atoms by a single bond.

Chloride-ion-3D-vdW.png
Chloride-ion-3D-vdW.png
This substance is vital to both the physical world and living organisms. It acts as an essential electrolyte in all body fluids. It is responsible for maintaining acid-base balance and regulating liquid flow in and out of cells. Without chloride, the delicate systems inside our bodies would not function correctly.

To understand chloride, we must look at its electronic properties. A chloride ion has a diameter of 181 pm, which is much larger than a standard chlorine atom at 99 pm. This size difference happens because the anion has one extra electron. This extra electron makes the atom's hold on its valence shell weaker.

NaCl polyhedra.png
NaCl polyhedra.png
In water, chloride is usually highly soluble, meaning it dissolves easily. However, some specific salts like silver chloride or mercury(I) chloride are only slightly soluble. When dissolved in water, chloride is bonded by the protic end of the water molecules.

Chloride can exist in several different chemical states through a process called oxidation. Chlorine can assume several oxidation states, including -1, +1, +3, +5, and +7. At a -1 state, it is called chloride. At a +1 state, it is hypochlorite, which is the active ingredient in bleach.

Hypochlorite-3D-vdW.png
Hypochlorite-3D-vdW.png
Other states include chlorite (+3), chlorate (+5), and perchlorate (+7).
Chlorite-3D-vdW.png
Chlorite-3D-vdW.png
These different forms allow chlorine to participate in many different chemical reactions. For example, chloride can be oxidized into chlorine gas during the chlor-alkali process.

In the natural world, chloride is most commonly found in seawater. The concentration of chloride ions in seawater is approximately 19,400 mg per liter. You can also find it in higher concentrations in inland seas or subterranean brine wells. Examples include the Great Salt Lake in Utah and the Dead Sea in Israel. Because most chloride salts dissolve in water, chloride-containing minerals are usually found in dry climates or deep underground. Common minerals include halite, which is sodium chloride, and sylvite, which is potassium chloride.

Biology relies heavily on chloride to maintain homeostasis. It is the most abundant extracellular anion in the body. It accounts for about one third of the tonicity in extracellular fluid. In mammalian cells, chloride concentrations typically range from 5 to 100 mM. In blood plasma, the concentration is around 100 mM.

Chloride-ion-3D-vdW.png
Chloride-ion-3D-vdW.png
Chloride also helps transmit action potentials in neurons through chloride channels. Additionally, the stomach requires chloride to produce hydrochloric acid for digestion.

The kidneys are the primary organs responsible for regulating serum chloride levels. Most chloride is filtered through a structure called the glomerulus. From there, the kidneys reabsorb most of it through the proximal and distal tubules. This happens through both active and passive transport. This regulation is crucial because high concentrations of chloride can have ecological effects. It can contribute to the acidification of streams or affect how aquatic plants and animals reproduce.

Human industry uses chloride in many massive and useful ways. The chlor-alkali industry is a major consumer of the world's energy. This process uses electrolysis to convert sodium chloride solutions into chlorine and sodium hydroxide.

Chloralkali membrane.svg
Chloralkali membrane.svg
We also use calcium chloride as a de-icer to lower the melting point of ice on roads. In the petroleum industry, engineers monitor chloride levels in drilling mud. An increase in chloride can signal that they have hit a high-pressure saltwater formation. From the salt on our food to the regulation of our blood, chloride is a fundamental part of our existence.

612 words
🖼️ 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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