Chemistry

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.
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.
The process, which takes place in Coke+Mentos reaction is called “nucleation”.
Hold is extremely ductile. Only one ounce of metallic gold can be elongated into very thin wires of gold can be drawn into 80 km of wire. This makes the wire only five microns thick.
Steel is basically a combination between iron (metal) and carbon (non-metal).
The only pure elements that are liquid at room temperature are bromine (fuming orange liquid), and mercury (a metal).
Vanadium oxide is a weird material which is a conductor of electricity but it is not a heat conductor.
Chemists had constructed plenty of structures that resemble real constructions, and named them after them.
Glass is an amorphous non-crystaline solid, which is usually produced by rapid cooling of melted amorphus materials, such as silica (SiO2).
The first elements were helium and hydrogen. They formed after Big Bang, within an extremely how environment, as a result of combination of subatomic particles.
The red planet (Mars) gets its name from iron oxide- Fe2O3. Mars is covered with this orange-red material.
Glow sticks emit light when two chemicals are mixed. The reaction between the two chemicals is catalyzed by a base usually sodium salicylate.
Helium and hydrogen make up most of the universe. Both of them account for 98% of all matter, being roughly 73% hydrogen, and 25% helium. All the other elements make up the remaining 2% of matter.
Liquid water can be cooled below zero degrees Celsius if the pressure is increased.
Peppers and similar “hot spicy” food are so due to a molecule called capsaicin.
Superfluid Helium defies gravity and climbs on walls.
Graphene is about 100 times stronger than would be the strongest steel of the same thickness.
Thanks to cryocooling refrigeration techniques, we can come close, in the range of a billionth of 1 K.
Some metals (in their actual pure metallic form) do have antibacterial properties. The most common one is copper.
If you cool oxygen down enough to liquefy or freeze it, it becomes pale blue. This is due to oxygen becoming paramagnetic when it condenses into liquid of solid phase.
Talc, a mineral made of hydrated magnesium silicate, defines the softest point in the 1-10 Mohs scale, which makes him the softest material on the Earth.
As it is agreed by most physicists, there are between 10^78 to 10^82 atoms in the observable universe.
In the 18th century, Antoine Lavoisier by burning a diamond in a solar furnace, and subsequent analysis of the resulting residue discovered that diamonds are made of carbon.
Fluoroantimonic acid, HSbF6 is the strongest known super acid.
Upon contact with some metals, 1-octen-3-one is formed as a result of the decomposition of oils present in our skin. This chemical is the real responsible of the smell that we associate coins or metals with.
The heaviest naturally stable element is uranium.
Human blood is red due to the hemoglobin.
The sun´s heat comes from continuous nuclear fusion reactions.
There are radioactive elements that impart energy to nearby phosphorescent or fluorescent materials and thus appear to glow.
The heaviest element in terms of density is osmium.
Hydrofluoric acid is so corrosive that it will dissolve glass.
Water expands about 9% when it freezes into ice.
Hydrogen is the most abundant element in the universe, while oxygen is the most abundant element in the earth´s atmosphere, crust and oceans.