Balance

(n.f.) Instrument used to measure mass.

Bar

(n.m.) Unit of pressure. The usual atmospheric pressure is approximately 1 bar.

Barometer

(n.m.) Device used to measure atmospheric pressure.

Basic

(adjective) Refers to an aqueous solution with a pH greater than 7 (less than 14). This solution contains hydroxide ions HO^-.

Battery

(n.m.) Electric current generator, consisting of a set of elements (cells, accumulators, or capacitors) in series or parallel. It is recommended to return used batteries, which are highly toxic due to their chemical composition, to a garage or gas station.

Boiling Point

(n.) Temperature at which a substance begins to boil when heated. The boiling point of pure water is 100°C under normal pressure (1,013 hPa).

Boiling

(n.) A particular type of vaporization, characterized by the formation of gas bubbles.

Braking Distance

(n.) The distance traveled between the moment the driver starts braking and the moment the vehicle comes to a complete stop.

Branch

(n.m.) Portion of a circuit with derivations that goes from one node to the next. A branch consists of dipoles connected in series.

Brass

(n.m.) (borrowed from the Arabic latum meaning copper) Important class of copper and zinc alloys. Brass is ductile and malleable.

Bronze

(n.m.) (From Latin bronzo) Alloy of copper and tin, sometimes with zinc.

Butane

(n.m.) Colorless and odorless gas with the formula C₄H₁₀. The boiling point of butane is -0.5°C. It is extracted from natural gas associated with petroleum. It is distributed commercially in bottles and used as fuel (heating, cooking). It also allows the synthesis of olefins and acetic acid through catalytic oxidation with air.