Fascinating chemistry

A flying balloon is perfect for any holiday event. Usually, purchased flying balls are filled with light volatile gas such as helium. At home, it is almost impossible to get such gas without special equipment. But helium is not the only gas that can be used for such purposes. At home, without unnecessary labor, you can get hydrogen, which is also suitable.

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The experience is cool, see for yourself: What you need: 1. Tomato 2. Matches 3. Syringe with flask 4. Bleach 5. Hydrogen peroxide (hydrogen peroxide) 36-37% So, now to the point, you will need: Syringe; Matches (preferably with a high phosphorus content); Sodium hypochlorite (whiteness, bleach); Hydrogen peroxide.

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If you have an air humidifier, a steam mop, an iron with a steamer, or similar equipment in your home, then you know that they need clean, and best distilled water, since water from the tap in such devices creates scale and they fail. By distillation is meant the conversion of water into steam, which, during cooling, condenses into pure H2O without additional impurities.

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Surprisingly, the entire diversity of the kingdom of wildlife is due to the unique sequences of four nitrogenous bases. In the nucleus of every cell of any living organism contains a nucleic acid - DNA. In this spiral molecule, all the necessary information is encoded to support life.

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Hello ladies and gentlemen. Today we’ll talk about burnishing, oxidation or blackening of steel. This is a surface coating method for steel with a thin layer of iron oxides. It protects the metal from corrosion, and also gives an attractive tint to the product. You can achieve black blue-black, gray or blue.

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Alchemists who first received hydrochloric acid in the 15th century called it "spiritus salis", "spirit from salt." This acid had magical properties at that time: it corroded paper, dissolved metals, poisoned people. These properties have remained with her to this day, but now this acid has been sufficiently studied, and there is no magic here.

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Good day, curious chemists! Today we will conduct a simple but spectacular experiment. Its essence is that the hydrogen released during the reaction burns with a blue flame. Reagents So, we need: Hydrochloric acid with a concentration of 15%; Copper sulfate; Aluminium foil. The experiment will be conducted in a glass jar.

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The penultimate stage on the way to obtaining a noble metal from radio components is the restoration of the latter from the corresponding chloride. Iron (II) sulfate is excellent for these purposes. Consider the equation of this reaction: HAuCl4 - hydrogen tetrachloroaurate (III) - a compound that is formed when gold is dissolved in aqua regia.

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Preface: "At the beginning there was a glass. Disposable." My first experiments were carried out in plastic cups because of their easy accessibility and low cost. But over time, the experiments became more complicated, it became necessary to heat the solutions. Also, glasses, like any dishes, got dirty, it’s inconvenient to wash them, and it’s not rational to use new ones constantly.

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Almost always, if any tool is idle, it begins to rust. It is worth only one winter to leave pliers or wire cutters in an unheated room and in the spring you can observe a layer of red rust on the surface. I will show a cheap and effective method how to remove all corrosion and partially restore the metal surface.

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Sometimes it becomes necessary to protect a product from environmental influences. In other words - paint, varnish. But, it is not always at hand lacquer or paint that can dry in a short time. This is one thing. Another that they are not always needed in the volumes that are offered in the store: 0.5 liters or more.

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Starch is a fairly common source of energy in the human diet. It is found not only in potatoes, but also in many foods that we eat every day. Starch is one of the products of photosynthesis and is quite widespread among plants, where it acts as a stock of substances.

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Steel familiar to everyone is an alloy of iron and carbon. Pure iron is malleable and soft, its scope is limited. A variety of steel products and steel products significantly change the hardness and ductility during various heat treatments: Steel hardening consists of heating to high temperatures and rapid cooling in oil or water.

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Recently, I got into my hands a set of silver cutlery, which is about a hundred years old. During this time, the spoons and knives had time to darken and rust, and I decided to clean them of the formed plaque. In this article, I will share a fairly effective way with which you can return the antique shine to its original shine.

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An integral part of any long trip is a bonfire. Tourists often use dry fuel for quick ignition. However, if a tourist chemist goes on a hike, then in his arsenal for ignition there is something more interesting - solid alcohol. It looks like this: It will be discussed in this article.

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Preparation of invisible ink from lemon. Entertaining experience. To carry out the experiment you will need: half a lemon, cotton wool, match, a cup of water, a sheet of paper. Squeeze the juice from the lemon into a cup, add the same amount of water. Dip a match or a toothpick with wound cotton wool in a solution of lemon juice and water and write something on paper with this match.

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Here is a recipe that allows you to remove seals, stamps and other notes from writing paper. To obtain this liquid, you need to take a 70% vinegar concentrate (about one teaspoon) and a small amount of potassium permanganate in crystalline form (at the tip of a knife). These substances are mixed, and after that the liquid is ready for use.

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Peristaltic or hose pumps are primarily designed for pumping clean, sterile or aggressive fluids, as they only come in contact with the flexible hose. In addition, they do not have rubber seals, so there is no contact of the transported medium with them. Thanks to the special design, they can also transport viscous substances, since they easily overcome backpressure and are easily cleaned (disinfected).

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The abundance of alcoholic beverages on the shelves of our stores, however, does not affect the reduction in the cost of these products. And simple esthete can not afford store products. A simple construction of a mini-factory for the production of home-brew (alcohol) is proposed. Any person with elementary knowledge of physics and chemistry can assemble the proposed design.

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Radiation is very dangerous for humans, but without special equipment it is impossible to determine its presence. Buying used building materials, scrap for DIY, or used vehicles, there is a chance of running into objects with a radiation background. Spending money on a dosimeter to check risky purchases is impractical, since in this situation no savings will come out.

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