P

The letter P is a widely used symbol in many areas of life, from mathematics to being the sixteenth letter in the English language alphabet. In mathematics, the letter P stands for pi, which is an irrational number that represents the ratio of any circle’s circumference to its diameter. This number has been used since… Read More

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pH

The pH of a substance is a measure of its acidity or alkalinity. The higher the pH, the more basic (alkaline) the substance is; the lower the pH, the more acidic it is. pH is important in many chemical reactions because it can affect how fast or slow they proceed. For example, enzymes that are… Read More

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