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formula, in chemistry

(Encyclopedia)formula, in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions....

formula, in mathematics and physics

(Encyclopedia)formula, in mathematics and physics, equation expressing a definite fixed relationship between certain quantities. The quantities are usually expressed by letters, and their relationship is indicated ...

formula weight

(Encyclopedia)formula weight, in chemistry, a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a formula by the number of atoms of that element present in the formula, an...

molecular formula

(Encyclopedia)molecular formula: see formula. ...

empirical formula

(Encyclopedia)empirical formula: see formula. ...

structural formula

(Encyclopedia)structural formula: see formula. ...

sol, in chemistry

(Encyclopedia)sol, in chemistry: see colloid.

resonance, in chemistry

(Encyclopedia)resonance, in chemistry: see chemical bond. ...

Formula One

(Encyclopedia)Formula One (F1), type of racecar used in Grand Prix automobile racing. Capable of speeds exceeding 230 mph (370 kph), the technologically sophisticated F1 cars are low-slung, open-wheeled, single-sea...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...