Chemistry

The original periodic table
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The original periodic table


 



To hasten fruit ripening, they are exposed to ethylene gas
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To hasten fruit ripening, they are exposed to ethylene gas


Ethylene gas (C2H4) is also used to induce flowering. It is widely used in the chemical industry, and its worldwide production (over 150 million tonnes in 2016) exceeds that of any other organic compound

 



Marvellous pictures of chemical compounds as crystals
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Marvellous pictures of chemical compounds as crystals


crystal, macrophotography, chemical compounds, mineral, Earth, beauty

 



The human nose can detect 1 trillion different odors!
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The human nose can detect 1 trillion different odors!


A trillion as in a million million (1012). That's a lot of scents!

 



Never attempt to put out burning oil with water
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Never attempt to put out burning oil with water


Water does not mix with oil and it vaporizes, carrying thousands of oil droplets. This in turncreates a huge contact surface with oxygen which intensifies combustion

 



Glowing smile!
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Glowing smile!


The deciduous teeth of children born after 1963 contained 50x more Strontium-90 than their parents' teeth, because of large-scale atomic testing.

 



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Dry ice pellets going straight from solid to gas


Without going through the liquid state. This is called sublimation

 



A solution of sodium acetate can crystallize instantly.
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A solution of sodium acetate can crystallize instantly.


When it is supersaturated, even the slightest touch of the hand will induce a sudden change of state, releasing energy in the form of heat.

 



Hydrogen bonds visible after 101 years!
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Hydrogen bonds visible after 101 years!


It took 101 for the hydrogen bonds to become visible, after they were first described. Thanks to atomic force microscopes.

 



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Mercury can “eat away” unprotected aluminium


This is because the metal surface is constantly being exposed to the air, which creates a continuous oxidation reaction. A tiny drop can "eat away" a entire aluminum can.

 



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An impressive chemical reaction


Often referred to as "elephant toothpaste", it occurs when you mix hydrogen peroxide with potassium iodide

 



BPA-free plastic containers probably just as unsafe as BPA
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BPA-free plastic containers probably just as unsafe as BPA