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Bromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest halogen and is a volatile red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour.

fluorine (F), most reactive chemical element and the lightest member of the halogen elements. As the most electronegative element, it is extremely reactive.

- Calcium trioxocarbonate (IV) occurs abundantly in earth's crust as limestone, chalk and marble - Eggshell is made almost entirely of calcium carbonate (CaCO3) crystals.

Aluminium sulfate is a salt soluble in water and is mainly used as a coagulating agent in the purification of drinking water. Copper demonstrated the greatest antimicrobial activity. The silver coatings demonstrated the second most antimicrobial surface.

metallurgy, art and science of extracting metals from their ores and modifying the metals for use.

Copper(II) carbonate or cupric carbonate is a chemical compound with formula CuC\(O_3\)

Common name : Isobutyl bromide IUPAC name : 1-Bromo-2-methylpropane Boiling point : 102^\circC Formula : C\(_4\)H\(_9\)Br

Zymase is an enzyme complex that catalyzes the fermentation of sugar into ethanol and carbon dioxide. It occurs naturally in yeasts.

Propyne (methylacetylene) is an alkyne with the chemical formula HC\(\equiv\)CC\(H_3\)

It is primary alcohol because it has only one alkyl group and dihydric because it has two hydroxyl groups

A hydrocarbon is any of a class of organic chemicals made up of only the elements carbon (C) and hydrogen (H). Classes are Aliphatic and Aromatic Hydrocarbons. Natural sources are coal, natural gas and petroleum.

Since the surface tension forces become smaller as the distance between water molecules increases, the intervening soap molecules decrease the surface tension.

- Monosaccharides are reducing sugars. - Pure monosaccharides are water-soluble, white, crystaline solids. - They taste sweet - Form a black residue of carbon when dehydrated

The principle described by the physicist Albert Einstein's famous formula: E = mc^2, involves mass–energy equivalence. I.e. the relationship between mass and energy.

The earliest developed breathalyzer was based on reaction of alcohol if present in the exhaled air with a cocktail of chemicals containing sulfuric acid, potassium dichromate, silver nitrate, and water. Silver nitrate catalyzes the reaction between alcohol and potassium dichromate in acidic medium.