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Yes
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Nothing that wasn't compounded in a laboratory is a pure substance. Not to mention there could be elements which we have yet to discover that could be lurking in there.
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That second answer's first sentence is meaningless, and its second is absurd. New elements can be created in nuclear-fusion experiments but they are very highly radio-active so are not found in Nature (except perhaps in certain astronomical processes?) and do not last long.
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To answer the original question, a substance is pure if it is not mixed with another. It's as simple as that, and has nothing to do with the identity or source of the chemical itself. A sample of Sodium Chloride (common salt) is pure if there is no other chemical within the sample. Table salt is not usually pure Sodium Chloride but only because it is usually sold with a trace of Magnesium Carbonate (dolomite) mixed with it to reduce caking.
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Is sodium chloride a example of a homogeneous mixture?
No, sodium chloride is a pure substance.
Is aqueous sodium chloride a pure substance?
no
Why sodium chloride is a pure substance?
Sodium chloride is a compound, not a mixture; after refining NaCl become very pure.
Is Sodium chlorate a pure substance and not a mixture of sodium chloride and oxygen?
Sodium chlorate is a pure substance with a chemical formula NaClO3. It is distinct from a mixture of sodium chloride (NaCl) and oxygen (O2).
Is NaCl a pure substance?
You could test a sample with a mass spectrometer, which would show all the elements present. If there are no elements present other than sodium and chlorine, then you have pure sodium chloride.
Is sodium a pure substance or mixture?
Sodium itself is a pure substance. It is an element with the chemical symbol Na and atomic number 11.
Is sodium chloride pure substance or mixture?
Sodium chloride (table salt) is a pure substance because it is a compound made up of sodium and chloride ions in a fixed ratio. It is not a mixture because it cannot be separated into its components by physical means.
Is sodium chloride an example of pure substance?
No, it's a mixture.
Why is sodium chloride a pure substance even though it is made up of 2 elements?
Sodium chloride is considered a pure substance because it has a definite chemical composition of NaCl, with a fixed ratio of sodium to chloride atoms. It is a homogenous substance with uniform properties throughout.
Is common salt are pure substance?
Yes, common salt (sodium chloride) is a pure substance because it is composed of only one type of molecule, which is sodium chloride.
Is salt Salt a mixture?
No, it is the compound sodium chloride, a pure substance.
Is sodium chloride a mixture substance?
Sodium chloride, NaCl, is a compound, which is a pure substance. It is a compound because sodium ions and chloride ions chemically bond to each other to form the ionic compound NaCl.
