The only elements that are liquid at room temperature are bromine and mercury. However, you can melt gallium by holding a lump in the warmth of your hand.
Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it
If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass.
A pure element can take many forms. For example, diamond and graphite both are forms of pure carbon. These are called allotropes.
The only letter that doesn't appear on the Periodic Table is J
Lightning strikes produce O3, which is ozone, and strengthen the ozone layer of the atmosphere.
The only two non-silvery metals are gold and copper.
Although oxygen gas is colorless, the liquid and solid forms of oxygen are blue.
The human body contains enough carbon to provide 'lead' (which is really graphite) for about 9,000 pencils.
Hydrogen is the most abundant element in the universe, while oxygen is the most abundant element in the earth's atmosphere, crust, and oceans (about 49.5%).
The rarest naturally-occurring element in the earth's crust may be astatine. The entire crust appears to contain about 28 g of the element.
One bucket full of water contains more atoms than there are bucketfuls of water in the Atlantic Ocean.
Approximately 20% of the oxygen in the atmosphere was produced by the Amazon rainforest.
Hot peppers get their heat from a molecule called capsaicin. While the molecule acts as an irritant to mammals, including humans, birds lack the receptor responsible for the effect and are immune to the burning sensation from exposure.
Dry Ice is the solid form of Carbon Dioxide, CO2
Liquid air has a bluish tint, similar to water.
Did you know... you can’t taste food without saliva.
Did you know... it's possible to get sick or even die from drinking too much water.
Did you know... fish scales are a common lipstick ingredient.
Did you know... about 78% of the average human brain consists of water.
Did you know... a lightning strike can reach a temperature of 30,000 degrees Celsius or 54,000 degrees Fahrenheit.
Did you know... the hardest chemical in your body is your tooth enamel.
Did you know... urine fluoresces or glows under ultraviolet light.
Did you know... you can extend the life of rubberbands by storing them in the refrigerator.
Did you know... Mars is red because its surface contains a lot of iron oxide or rust.
There is about 1/2 lb or 250 g of salt (NaCl) in the average adult human body.
Antimony (Sb) comes from Stibium- stibnite used (as in ancient Egypt) as a cosmetic for painting the eyes.
Copper (Cu) comes from cuprum- Cyprus that Romans called it Cyprium aes in their writings, meaning "Cyprian metal". This was contracted to the Latin word cuprum.
Gold (Au) comes from Aurum- the Latin word for gold and the source of its chemical symbol, "Au". Aurum (liqueur), an Italian liqueur.
Iron (Fe) comes from latin of ferrum to describe iron.
Lead (Pb) comes from plumbum- from the Anglo-Saxon word "lead; Latin, plumbum" (the origin of the symbol Pb is the Latin word "plumbum" meaning "liquid silver".
Mercury (Hg) comes from hydrargyrum- "mercury, quicksilver," 1560s, from Latin hydrargyrus, from Greek hydrargyros, from hydr-, stem of hydor "water" (see water (n.1)) + argyros "silver".
Potassium (K) comes from kalium- Latin kalium which in turn, is derived from the Arabic word for alkali.
Silver (Ag) comes from argentum- The name of Argentina (a Spanish adjective meaning "silvery"), traditionally called the Argentine in English, is ultimately derived from the Latin argentum "silver".
Sodium (Na) comes from natrium- Its symbol is Na, which stands for the Latin word "natrium" meaning sodium carbonate.
Tin (Sn) meaning stannum- latin- Stannum, New South Wales, small tin mining village.
Tungsten (W) comes from Wolfram- Germanic name, Wolfram. The name Wolfram comes from the mineral
wolframite, in which it was discovered. Wolframite means "the devourer of tin" since the mineral interferes with the smelting of tin.
Helium (He) was derived from Helios meaning the sun and is the 2nd most abundant element in the universe
Hydrogen is the most abundant in the universe.
Lithium is the lightest metal
Sulfur has a pungent odor (rotten eggs), but a beautiful yellow color.
14 elements are named after scientist.
30 elements are named after places.
Calcium was isolated by Sir Davy in 1808.
17% of your body is carbon
Aluminum is the most abndant metal in Earth’s crust and was first isolated in 1827 it cost $500/lb.
Bronze is a copper alloy of copper and tin.
Brass is a copper and zinc alloy.
The air we breathe is made from 78% nitrogen, 21% oxygen, 1% argon, and a small amount of other gases.
Banging your head against the wall burns 150 calories per hour.
Cherophobia is the fear of fun.
Bananas are curved because they grow towards the sun.
During your lifetime, you produce enough saliva to fill 2 swimming pools.
Nitrous oxide, also called “laughing gas,” is used as a mild anesthetic for minor surgery and as the propellant in cans of whipped cream.
Sulfur hexafluoride, a gas used to pressurize “unpressurized” tennis balls and as a coolant in nuclear reactors.