A Chemical That Can Kill - Acid Documentary - Films An acid is a chemical compound whose aqueous remedies are identified by a sour taste, the capacity to .\r
\r
Deadliest Substances on Earth - Poison Documentary In biology, poisons are substances which cause disturbances to organisms, usually by chemical reaction .\r
\r
They explode when you touch them. Even a millionth of a gram can kill you. They can even disable you with their horrifying smell. SciShow introduces you to .\r
\r
Building wiring is the electrical wiring and associated devices such as switches, meters and light fittings used in buildings or other structures. Electrical wiring .