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baking powder
Poudre fà lever

Baking powder is a mixture of carbonate and a weak acid used in cooking. When water is added to the solid mixture, or if the mixture is heated, carbon dioxide is produced, which forms bubbles in the dough or candy mixture, which swell and give a spongy structure. The mixture usually contains sodium hydrogen carbonate (NaHCO3) and tartaric acid.

The powder can be made in the home kitchen by mixing cream of tartar (potassium salt of tartaric acid) and baking soda (sodium hydrogen carbonate). This prevents the reaction from occurring before the desired time.


balance
balance f

Balance scale. 1 - A device by which the masses of objects are compared. Today it is common to use scales
Electricity in schools.
2- Chemical equations must be balanced. Both sides of the equation must contain the same number of atoms, since atoms are neither born nor destroyed.
For example:

Zn + HCl → ZnCl2 + H2
(gas) (aqueous) (aqueous) (solid)

Number of atoms:
Zn = 1H1CI = 1Zn = 2CI = 2H = 2
The equation is not balanced.

Zn + 2HCl → ZnCl2 + H2
(gas) (aqueous) (aqueous) (solid)
The equation is balanced.


barium
barium m

Barium. A highly reactive element from the group Il. It is found in nature as sulphate (barite) and carbonate. The metal is extracted from molten chloride by electrolysis. Barium chloride solution is used in the sulfate test.


barrel
barril m

barrel. 1 - Wooden barrel for storing beer, its size
It is exactly equal to 32 imperial gallons.

2 - A unit of volume in the petroleum industry.
One barrel is equal to about 35 imperial gallons (159) liters.

base. base
base f

a base . A base is a substance that reacts with an acid to form a salt and just water. The base is usually metal oxides or hydroxides, such as sodium hydroxide (NaOH) and copper oxide (CuO)(II).

NaOH + HCL → NaCl + H2O
(aqueous) (aqueous) (aqueous) (aqueous)

CuO + H2SO4 → CuSO4 + H2O
(aqueous) (aqueous) (electrolyte) (gas)

Metal oxides and hydroxides that dissolve in water are known as alkalis, and they are compounds of group metals | And || .

The ammonia solution is an alkali, and contains balanced hydroxide ions:

NH3 + H2O = N+H₄ + O-H
(aqueous) (aqueous) (electrolyte) (gas)


basic oxide
oxyde m basic

Basic oxide is an oxide that reacts with an acid to form a salt and just water. Basic oxides are metal oxides, but not all metals form basic oxides
acidic oxide and amphoteric oxide. Look


basic salts
Other basics

Basic salts. Salts contain hydroxide ions and ordinary stalagmites as well, such as sulphate and carbonate.

Common examples are:

Malachite СиСО3. Си (ОН)2
Azurite 2CuCO3. Cu(OH)2
White lead 2PbCO3. Pb(OH)2


battery
battery f

battery . A device that converts chemical energy into electrical energy, in which chemical reactions occur and electrons are sent through a circuit. There are two types of batteries, one is rechargeable and the other is non-rechargeable. The first type battery is known as the accumulator.
Batteries are available in different shapes, sizes, and prices, and their chemical composition also varies.
A normal “dry battery” (or Leclanch dry cell) contains a trail of carbon and zinc electrodes and an ammonium chloride gel as the electrolyte. It gives a voltage of 1.5 volts. See cell.