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cation
cation m

Down. A positively charged ion. Most stalactites are metal ions, such as Fe2+, Cr3+, Nat+, Ca2+, and Al+3, which are attracted to the cathode during electrolysis. There are three stalactites that are not made of metal, which are the hydrogen ion (H+), the oxonium ion (H3O+), and the ammonium ion (NH+4).


caustic
caustique

Kao. This term is used to describe materials that burn or “eat away” organic matter such as flesh. Its use is usually limited to alkaline substances, such as caustic soda (sodium hydroxide) and caustic potash (potassium hydroxide).


Celsius scale of temperature (°c)
échelle f Celsius

Celsius temperature scale. This ladder depends
By dividing the range between the melting point of pure ice (0°C) and the boiling point of pure water (100°C) into one hundred distances. It was originally called the Celsius scale, but is now named after Celsius, the man who designed it. It is called and equal to one degree Celsius. It costs us one Kelvin.

0° Melting point of pure ice.
37° normal body temperature.
100° Boiling point of pure water.


cell
accumulateur m. pile f

cell. 1 - A device for obtaining electrical energy from a chemical reaction, often called a battery.
2 - A single unit of similar units forms a battery

Negative poles
Positive polarity
Electrolyte

Such as the lead-acid accumulator, which is used in most cars. It contains six cells, each of which gives two volts, and the total voltage is 12 volts because the cells are connected in series in the accumulator, while a regular dry battery consists of one cell.

3 - The term is also used to describe devices and chemicals used in electrolysis, such as an “electrolytic cell.”


cellulose
cellulose f

Cellulose is a carbohydrate and a polymer at the same time. It consists of glucose monomers, with the formula CH10Osn, which is the substance that makes up the cell walls of plants. Cellulose is useful to us in two ways, and is used in the manufacture of paper and artificial silk (rayon).


cement
cement m

Cement. Cement is made by heating limestone and clay together and then crushing the resulting product. When adding water to the mixture and letting it dry
It turns into a harsh substance.

Cement + sand + water → mortar
Cement + sand + gravel + water → concrete


centrifuge
centrifugeuse f

Centrifuge. If it is required to separate a solid from a liquid, a centrifuge can be used. The mixture is placed in tubes within the machine, and the tubes rotate around an axis at very high speeds, expelling the solid material to the bottom of each tube. It forms a compact mass that enables the liquid to be poured out of the tube. Centrifugal machines are dangerous and you must always ensure that the lid is tightly closed when in use.


chain
chaîne f



series . Carbon atoms can bond to each other in chains and form long molecules.
In polymers, these chains can be thousands of atoms long. Chains may also have branches. Here is an example of a string:
Pentane - C5H12

chain reaction
Reaction in the chain

Chain reaction. Some isotopes are unstable, and when charged with a neutron, they break apart and produce smaller atoms and more neutrons (nuclear fission).

3 neutrons + barium and krypton atoms < neutron + U 235/92

The consumption of each neutron results in three neutrons, each of which can continue to split another large, unstable atom and produce more neutrons. These can then continue to interact and produce more and more neutrons. This is called a chain reaction, and it is the basis of nuclear reactions in nuclear power plants and in atomic bombs.