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MEL Science  🎬Cool short chemistry videos and tricks every day! 📦Subscribe to exciting chemistry here :

A photo from our subscriber - heating amethyst and coral and observing the effects 😉
Thank you, @seamlesslylearning ❤️
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It shouldn't be so surprising, but it is😃

Apply some liquid soap to the tip of the leaf with a cotton swab. Toss the leaf into a dish filled with water. Note that it sails like a boat!
At the border between the boat and the water’s surface, the water is actively “pulling” the boat to itself. This force “pulls” the boat in all directions equally, and therefore the boat remains stationary. This force directly depends on surface tension. Soap contains surfactants, which reduce the surface tension of the water. This weakens the soapy water’s “grip” on the boat significantly. It would seem that soap pushes the boat forward; in fact, the opposite is true! The undiluted water pulls the boat harder than the soapy water, drawing the boat away from the soap film.
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This amazing "paint" conducts electricity😮 What would you draw with it?

Mix 10mL liquid glass and 5g graphite powder in a cup. Use a cotton swab to transfer the mixture to a piece of paper. You can draw anything you want, but it must start at the edge of the paper, and the line must be continuous, as shown in the video. Connect the two wires to the electricity source. Then attach the clip of the first wire to the edge of the paper, where the drawing begins. Attach the clip of the second wire to the diode. Touch the long prong of the diode to the line, and watch the diode glow.
Graphite is a good electrical conductor, and the liquid glass glues its particles together to make a continuous circuit. Electrons start moving from one particle of graphite to another. When we close the circuit with a diode, current flows through it and the diode lights up. These “wires” can be applied to any surface in the form of any drawing. But the line must be unbroken, otherwise the circuit will not close and a current will not flow through it.
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Chemistry may seem complicated, but it is also breathtakingly beautiful and exciting! MEL Chemistry sets cover over 30 different chemistry topics and explain complex concepts in simple language. The knowledge, supported by interesting experiments, will remain with your child for many years!
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Hydrogen peroxide knows a lot about multitasking😉

The “Super Homemade Elephant Toothpaste” experiment: In a glass, combine a few drops of food coloring with a 100mL 3% hydrogen peroxide solution. Add a “yeast mixture” (10g yeast with 30 mL water). Observe the formation of a large amount of foam. The “Home Dry Cleaning” experiment: Use a ballpoint pen to write or draw something on a piece of white cotton fabric. Blot the inscription with a saturated potassium permanganate solution in 70% acetic acid. After the “stain” changes from purple to brown, blot with a cotton swab dipped in 3% hydrogen peroxide solution. The inscription should disappear!
The “Super Homemade Elephant Toothpaste” experiment: Yeast secretes the enzyme catalase quite actively in the presence of hydrogen peroxide. This accelerates the decomposition of hydrogen peroxide into water and oxygen, which makes the liquid mixture foam.
The “Home Dry Cleaning” experiment: Potassium permanganate is a strong oxidizer and breaks bonds in the ink molecules. The dye’s structure changes, and it becomes colorless. Manganese(IV) oxide, however, leaves a brown stain. Remove the brown spot using a 3% hydrogen peroxide solution, which restores the unreacted pink potassium permanganate and brown manganese oxide(IV) to colorless manganese acetate(II). And acetic acid assists in this reaction by creating the needed acidity.
Hydrogen peroxide is used as an antiseptic in medicine, as a bleach in papermaking, and companies that employ aseptic packaging technology (such as Tetra Pak) use hydrogen peroxide as a disinfectant.
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This has gotta be one of the cutest snakes ever😍 Ever tried this?

Make a "snake" by drawing a spiral on a piece of paper and cutting it out with scissors. Make a stand for the “snake” by inserting a needle into a bamboo rod, then putting the contraption in a glass with salt for stability. Place a candle in the glass.
Place the “snake” on the stand and light the candle. Watch the “snake” spin!
The candle flame heats the air, which expands, becomes less dense, and rises. This creates a convection stream of warm air, which sets the “snake” in motion. For the experiment to succeed, the snake must be long enough, spirally shaped, not light enough to be blown away, and not heavy enough to have trouble rotating.
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A Cola can's biggest secret is revealed😃 Surprising, isn't it?

Buff the top layer of paint off of an aluminum can. Open the can and use a wooden rod to suspend it in a suitably-sized beaker. Add some drain cleaner (usually a 10% sodium or potassium hydroxide solution). Observe a tumultuous reaction and release of gas. Wait two hours. Take the can out of the liquid. It would seem that the aluminum has completely dissolved, but the drink hasn't leaked out!
This ordinary aluminum can is concealing a devious secret – it is covered with a protective layer not only on the outside, but on the inside as well! When we remove its paint coating, we expose the aluminum, which easily reacts with a drain cleaner that contains an alkaline component. But even when the aluminum has dissolved completely, the drink will not leak out. There is a second material inside the can – a layer of plastic that keeps the drink itself from interacting with the aluminum.
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VR lessons are a great way to connect the worlds of macro and micro exploration, allowing students to visualize concepts that are otherwise confined to pictures in a textbook. Now kids can travel the molecular world without leaving their desks!

All our subscribers get free access to MEL Chemistry VR lessons. Don't miss this opportunity!
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Seriously? It DOESN'T POP?😳

Inflate a balloon slightly. Add 50mL water using a syringe. Blow the balloon up to the desired size. Inflate the second balloon as you normally would, without water. Bring the balloons to a burning candle one by one. Note that the “hydrated” balloon does not burst!
The water stays in close contact with the balloon, providing a good thermal contact. When the balloon’s surface is heated, the water heats up as well. The water’s high thermal conductivity allows for the rapid distribution of energy throughout its volume. Ultimately, we are heating not only the surface of the balloon, but all the water in it at once. Water’s boiling point is far below the melting point of the balloon’s material, and water’s high heat capacity makes it impossible to heat quickly, which means that the water can efficiently protect the balloon from the heat for a long time. This protection will work until the water boils away.
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This fragrance created with love will melt her heart💙😊

Pour the base oil in a small spray bottle, add some orange zest, a cinnamon stick, a piece of anise, and glitter. Mix thoroughly.
As essential oils are soluble in fats, the oils in the orange zest, cinnamon, and anise dissolve in the base oil. The process of dissolving certain substances from a solution or dry mixture in a suitable solvent is called extraction. The previously-unscented oil now has a pleasant natural aroma. Their lightness and subtlety set them apart from alcohol-based fragrances. Experiment by adding whatever you want to the base – for instance, visit a spice shop or buy your favorite fruits.
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