News tagged with concentration

Is this peptide a key to happiness?

(Medical Xpress)—What makes us happy? Family? Money? Love? How about a peptide? The neurochemical changes underlying human emotions and social behavior are largely unknown. Now though, for the first time in humans, scientists ...

Mar 07, 2013
popularity 4.9 / 5 (8) | comments 0 | with audio podcast

Does chewing gum give your brain an edge?

(HealthDay)—That wad of gum you're chewing may be more than a breath-freshener—it might also boost your powers of concentration, a small new study suggests.

Mar 09, 2013
popularity 3 / 5 (5) | comments 3 | with audio podcast

Concentration

In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Four types can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in homogeneous solutions.

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