papel tornasol

papel tornasol

Paper impregnated with litmus , usually cut in narrow strips. Dipping red litmus paper into a basic solution turns it blue; dipping blue litmus paper into an acidic solution turns it red.

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Pramonės šaka / sritis: Chemistry
Category: General chemistry
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tornasol

Chemistry; General chemistry

A mixture of pigments extracted from certain lichens that turns blue in basic solution and red in acidic solution.

papel

Art history; General art history

Matted plant fibres made into sheet form either by hand (traditional) or machine (modern). Handmade paper was produced by drying pulp, produced from beating cotton or linen rags ...

papel

Art history; Visual arts

A (typically) thin mass of plant fibers in sheets or rolls that serves to bear marks from various media (paints, graphite, charcoal, etc. ) And may serve as a background to a ...

clausura

Chemistry; General chemistry

Un término matemático que dice que si funciona con cualquier par de números reales A y B con +, -, * o /, se obtiene un número real.

ditributividad

Chemistry; General chemistry

Una propiedad matemática que dice: A * (B + C) = (A * B) + (A * C).

frecuencia

Chemistry; General chemistry

Número de eventos en una determinada unidad de tiempo. Al describir una onda que se mueve, significa que el número de picos que pasan por un punto estacionario en una cantidad ...