Eli5: Why does water that dries on glass leave “streaks” or grey markings on the glass?
In: 192
Because what we think of as water is not only water. It has minerals and other things in it that do not evaporate
Because what we think of as water is not only water. It has minerals and other things in it that do not evaporate
The water has stuff in it. When it dries, the water turns into a gas and leaves whatever was in it behind.
The water has stuff in it. When it dries, the water turns into a gas and leaves whatever was in it behind.
The water has stuff in it. When it dries, the water turns into a gas and leaves whatever was in it behind.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
Tap water has sodium, magnesium, and sometimes potassium salts in it from either 1) dissolving minerals from the source or 2) added during the treatment process. This mineral content or ‘hardness’ can vary from municipality to municipality.
I worked as a QA chemist for a large municipality water system for a couple years and every month or so we’d get a call from a customer complaining about ‘white stuff’ in their water. It was always magnesium salts precipitating out of solution and perfectly harmless.
It’s what called hard water. Minerals are dissolved in the water and when it evaporates the minerals are left as deposits.
It’s what called hard water. Minerals are dissolved in the water and when it evaporates the minerals are left as deposits.
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