What is the pH scale? What is the pH range of an acid, base, and pure water?

A pH scale is a scale of measurement that describes the level of acidity or alkalinity of a solution.

The pH range of an acid is below 7.0; base is above 7.0, and pure water is 7.0

Explanation:

A pH scale is a scale of measurement that describes the level of acidity or alkalinity of a substance. It reads numerical values from 0 to 14.0 where values of 0 to 6.99 represent acid; 7 represent neutral; and values above 7.0 to 14.0 represent alkaline (base).

european union policies. the eu's long-term objective is to achieve levels of air quality that do not result in unacceptable impacts on, and risks to, human health and the environment. eu policies aim to reduce exposure to air pollution by reducing emissions and setting limits and target values for air quality.

the main environmental problems in western europe were: energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. many environmental problems are common to most european countries.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

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