Chemistry

Superfluid Helium defies gravity and climbs on walls.
Lighting strikes produce Ozone, hence the characteristic smell after lighting storms.
DNA is a flame retardant.
A pure element takes many forms. For example, diamond and graphite both are forms of pure carbon.
One bucket full of water contains more atoms than there are buckets of water in the Atlantic ocean.
Upon cutting onions an enzyme is released which transforms sulfoxides present in the onion into sulfenic acid. Sulfenic acid gets spontaneously rearranged into propanethial-S-oxide, which through the air, goes into your eye and irritates your lachrymal glands.
Glass is actually a liquid, it just flows very, very slowly.
The human body contains enough carbon to produce graphite for about 9,000 pencils.
The rarest naturally-occurring element in the Earth´s crust is astatine.
Every hydrogen atom in your body is likely 13.7 billion years old because they were created at the birth of the universe.
“New car smell” is pretty much just a combination of 50+ chemicals (known as “volatile organic compounds”) that are released into the car, decaying quickly over time.
Air becomes liquid at -196°C.
The Nanoputians are molecules that resemble human beings, and were synthesized and diversified (to give different kinds of models).
1200 years ago, a cook mixed three ingredients very common in any kitchen: potassium nitrate (food preservative), sulphur and charcoal. Mixed and and heated, they go off exploding on a huge bang. This is basically gunpowder.
Friedrich Kekulé conceived the idea of the benzene structure and its resonance forms after a dream in which he saw a snake seizing its own tail.
Water expands when freezes, unlike other substances.
On average, thirteen inches (33.02 centimeteres) of snow equals one inch (2.54 centimeters) of rain in the US, although this ratio can vary from two inches (5.08 centimeters) for sleet to nearly fifty inches (127 centimeters) for very dry, powdery snow under certain conditions.
Californium was made by shooting He nuclei at curium-242 nuclei. This gives up to californium-245, an isotope with half-life time of 44-minutes.
The graphite rods in the nuclear reactor act as a moderator. They reduce the speed of neutrons and allow a nuclear reaction to be sustained.
Dry ice is basically the name we use for solid (frozen) carbon dioxide, or CO2. It has a surface temperature of -78°C, and it is widely used as cryo-cooling agent.
You can t freeze helium simply by cooling it to absolute zero. It will freeze if you apply extremely intense pressure.
The hardest substance on the human body is enamel, the external tissue that covers teeth.
It would be required very high temperature (in the order of 1000°C) to burn diamond. That is because three dimensional arrangement of the diamond is so tight and difficult to disrupt.
Ozone layer has a high concentration of ozone (O3). This gas is responsible for the absorption of most of the ultraviolet (UV) radiation coming from the Sun.
If you put water outside from spaceship, even though it would be dramatically below its freezing point, it would vaporize and go into gas phase right away.
Gallium is a metal with an unusually large liquid state range, which goes from 303 degrees Kelvin (30°C, that means it can melt in your hands) up to 2477 K.
Planet Uranus is indeed rich in extremely flammable gases, methane and hydrogen, but it doesnt burn, because Uranus simply doesnt have enough oxygen for these gases to burn.
Both wasp and bee sting venom is basically a combination of different enzymes and small molecules. The different enzymes have the goal of breaking down cells, including neurons, which is the cause of the intense pain that we feel.
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