What chemicals can evaporate easily, flammable, and soluble in water?

1.Ingredient Formula:

Realgar powder (as2s3 or as4o6) - 25g

Potassium chlorate (KCLO3) - 23g

Red phosphorus---2—

Water (add a small amount of glue) - 20 ml

Use the medicine at one time and do not store it.

2.Preparation method: 1) Weigh 25g of realgar and put it in a mortar to grind into fine powder.

2) Weigh 23g of potassium chlorate and grind it in another mortar. (Note: Do not use a mortar that has just been ground realgar and has not been brushed clean to grind potassium chlorate, otherwise it is easy to be dangerous!) ）

3) Take 20ml of water, add about 1ml of glue, and stir well.

4) First put the finely ground potassium chlorate into the evaporation dish (or small beaker), pour the prepared 20ml of glued water into it, mix it with a glass rod, and moisten it with a glass rod to make the potassium chlorate powder all wet, and then add the realgar powder, and then stir it with a glass rod to make it fully mixed evenly. (Do not mix dry potassium chlorate with dried realgar powder, otherwise it will happen**!) ）

5) Weigh 2g of red phosphorus, add it to the above mixture, and stir it well with a glass rod to make it a purple-brown paste.

6) Evenly coat the prepared herbs on the paper and move them to a ventilated place to dry (avoid sunlight to avoid combustion, **).

7) After the basic drying, cover it with rice paper, and then use a brush to dip a small amount of glue in water, and gently brush it, so that the glue penetrates through the rice paper to the bottom, so that it sticks well together. After brushing, move to a cool and ventilated place to dry (avoid sunlight to avoid burning,**). The finished product should be placed in a cool place (avoid sunlight to avoid combustion,**), but should not be stored for a long time.

The most common is solid alcohol!! The others are a bit hard to imagine!!

Vegetable oil is a liquid that does not evaporate easily and does not volatilize.

Vegetable oil is a compound composed of unsaturated fatty acids and glycerol, which is widely distributed in the realm of self and sleepiness, and is obtained from the fruit, seed and germ of the plant. Such as peanut oil, soybean oil, flax oil, castor oil, rapeseed oil, etc.

The main components of vegetable oil are linear high-grade fatty acids and glycerol-generated esters, which contain a variety of unsaturated acids in addition to palmitic acid, stearic acid and oleic acid, such as erucic acid, tung oleic acid, ricinoleic acid, etc. Vegetable oil mainly contains minerals such as vitamin E, K, calcium, iron, phosphorus, potassium, and fatty acids. The fatty acids in vegetable oils can make ** moisturizing and shiny.

The substances that release flammable gas when exposed to water are more common potassium, calcium, sodium, and calcium carbide, and the substances that release flammable gas when exposed to water refer to the substances that release flammable gas when exposed to water, and the gas can be mixed with air to form a substance that can form a mixture. This kind of substance has the risk of decomposition in water, producing combustible gas and dry heat, and can cause disasters. There are two situations that cause ignition, one is that a violent chemical reaction occurs when encountering water, and the heat released can heat the combustible gas produced by the reaction to the spontaneous ignition point, and it will also ignite and burn without ignition, such as metal sodium, calcium carbide, etc

The other is that a chemical reaction can occur when encountering water, but the heat released is less, which is not enough to heat the combustible gas produced by the reaction to the spontaneous ignition point, but when the combustible gas comes into contact with the ignition source, it will immediately catch fire and burn, such as calcium hydride, sodium dithionite jujube next hole (insurance powder), etc.

There are many types of substances that emit flammable gases when exposed to water, and the flammable gases generated are different, so their dangers are also different. Flammability in contact with water or acid is a common hazard of these substances. When the fire is ignited, it cannot be extinguished with water and foam fire extinguishing agent, and dry sand, dry powder fire extinguishing agent, carbon dioxide fire extinguishing agent, etc. should be used to extinguish the fire.

Some of these substances react more violently with acids or oxidants than with water, and are more likely to catch fire. Some flammable gas substances are released when exposed to water, such as calcium carbide (calcium carbide), etc., which react with water to form combustible gas, and form a first-class mixture with air.

Flammable solids refer to solids with low ignition points, sensitive to heat, impact, and friction, easily ignited by external ignition sources, and rapidly combusted, and may emit toxic fumes or toxic combustion gases. However, it does not include substances that have been listed as **.

The residue of flammable gas released by jujube water refers to the substance that releases flammable gas when exposed to water, and the gas can be mixed with air to form a first-class mixture.

Concentrated hydrochloric acid, concentrated ammonia, alcohol (including alcohols), formaldehyde (aldehydes?) Bromine water, concentrated nitric acid, concentrated ammonia and concentrated nitric acid should also be easily decomposed

--Elemental: BR2, I2

--Oxides: CO2 (dry ice), -Hydrides: NH3 (liquid ammonia), H2O, benzene, gasoline and other hydrocarbons--- acids: Hno3 (sulfuric acid is a refractory volatile acid, its boiling point is more than 300 degrees) --A lot of organic matter:

Ethanol, acetic acid, acetaldehyde, ethyl acetate are the bases below

1.Volatile substances are molecular crystals.

--There are four types of crystals: atomic crystals, ionic crystals, molecular crystals, metal crystals--- atomic crystals, ionic crystals, and the interactions between particles in molecular crystals are covalent bonds, ionic bonds, and metal bonds, which are chemical bonds and strong interactions, so that the bonds between particles are very strong, making it difficult for particles to be separated from each other and volatilize.

--The intermolecular interaction in molecular crystals is an intermolecular force, not a chemical bond, but a weak interaction. This makes it easy for molecules to detach from each other.

2.in molecular crystals.

--The lower the boiling point, the more volatile it is.

--The greater the intermolecular force, the higher the boiling point.

--The magnitude of the intermolecular force is related to the structural properties of the molecule.

--The larger the molecular weight, the greater the intermolecular force, the higher the boiling point, and the more difficult it is to volatilize.

--When there are hydrogen bonds between molecules, the intermolecular force is large, the boiling point is high, and it is difficult to volatilize.

3.Volatile substances.

--Generally refers to liquid or solid state at room temperature.

--Elemental: BR2, I2

--Oxides: CO2 (dry ice), -Hydrides: NH3 (liquid ammonia), H2O, benzene, gasoline and other hydrocarbons--- acids: Hno3 (sulfuric acid is a refractory volatile acid, its boiling point is more than 300 degrees) --A lot of organic matter:

Ethanol, acetic acid, acetaldehyde, ethyl acetate 4Why are organic compounds mostly volatile?

-- Because a lot of organic matter is molecular crystals.

5.Is the smell due to volatilization?

-- Yes, the nose comes into contact with volatile molecules.

6.Why are most salts less volatile?

-- Because salt is all ionic crystals, it's hard to smell salt.

Gases are H2, O2, N2, CO2, HCI, NO2, NO, SO2.

Volatile substances are, ammonia, liquid bromine, concentrated hydrochloric acid, concentrated nitric acid. Gasoline.

Soluble in water: HCl, H2S, SO2, SO3, NH3

Volatile: HCl, HNO3, alcohol.