Chlorine combines with sodium to make salt (Sodium chloride).
It is one of the halogens, a group of highly reactive nonmetals that are all poisonous in their pure forms.
Other halogens are Fluorine, Bromine, Iodine, and Astatine.
The halogen light bulbs used in cars headlamps have a halogen gas, usually iodine or bromine, surrounding the light filament.
Halogen bulbs are brighter and last much longer than ordinary light bulbs.
Fluoride compounds in toothpaste and drinking water help to prevent tooth decay.
Chlorine reacts with lots of other elements to make some very useful compounds such as PVC, a plastic for pipes and waterproof fabrics.
CFC – Chlorofluoro carbons.
Iodine (turns straight into a gas) (Sublimes) at room temperature.
Chlorine is used in swimming pools to kill germs that are why swimmers use goggles.
Carbon has two isotopes.
Muons are particles of atom.
Isotopes have same chemical but different physical properties.
Ions => In an atom, the positive electrical charges of the protons are balanced by the negative electrical charges of the electron. The atom is therefore electrically neutral. However, if you add or take away one or more electrons from an atom, it becomes either negatively or positively charged, such charged particles are called Ions.
The purest naturally occurring crystalline form of carbon: diamond
The mixture which can dissolve platinium: Aqua regia
Steel is more elastic than rubber
Marble is metaphoric rock.
Oil rises in a wick of oil lamp because of a property of matter, called capillary action
Mercury metal is 13.5 times heavier than water
Diamond is the purest naturally occurring crystalline form of Carbon
Caustic soda is extensively used for making Surf.
Charcoal Sulphur Saltpetre makes Gunpowder.
Argon comes from the Greek meaning lazy
Silver coins made from Copper and Nickel
Kallium is the old name for which element-Potassium
Coal is formed from the remains of forests that grew in the carboniferous period about 300 million years ago.
Half time is a time of radioactive substance taken by that substance to decompose radioactivity to half of its weight.
Calcium chloride is present in the common toothpastes as an abrasive.
Copper and tin make gunmetal.
Liquefied Petroleum Gas consists mainly of methane, butane and propane.
Magnesium is a metal extracted from the seawater.
Magnetite can be used for extraction of iron.
The main constituents of Pearl are calcium carbonate and magnesium carbonate.
Pollution in rivers is measured by the percentage of dissolved amount of Nitrogen.
