Salt is a compound made from Sodium and Chlorine. Common Definition of a Pure Substance . A pure substance is a substance comprised of only one type of particle. ... a mixure of salt and water is composed of dissolved salt … Actually it isn't Fe2O3 either but a mixture of Fe2O3 and FeO. table salt is a pure substance as it is made up of only one type of particle, salt particle. Maybe I'm out of touch and need to go back to school.When I read this I consider rust (if Fe2O3) as a pure substance. To a non-chemist, a pure substance is anything composed of a single type of material. Though it is certainly 'homogeneous' (pure solid crystal), it is neither a mixture nor heterogenous. So, in addition to elements, compounds, and alloys, a pure substance might include honey, even though it consists of many different types of molecules. In chemistry, a pure substance is a material with a constant composition. Salt easily dissolves in water , but salt water cannot be classified as a substance because its composition can vary. Since it’s minimally processed, it … Similarly, salt solution is a homogeneous mixture of salt and water. When I read nickel I read 5 cent piece and that isn't pure. Table salt is a (pure) substance, chemically named: sodium chloride, NaCl. I would chalk this up to a poorly worded question. Examples include water (liquid), diamond (solid), and oxygen (gas). Therefore, we are more correct when we say that a pure substance is homogeneous, but not fully correct when we say that a homogeneous substance is a pure substance. Which is a pure substance soda? Water is also a pure substance . It is considered a pure substance because it … Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. Water is also a pure substance. Ordinary table salt is called sodium chloride. Sea salt is mostly composed of sodium chloride, a compound that helps regulate fluid balance and blood pressure in the body. In other words, it is free of contaminants. A pure substance can be either an element or a compound, where the individual chemical elements are always in a fixed proportion to each other. A pure substance made of only one kind of atom Mixture A combination of two or more substances that are not chemically combined ; Composition Variable(What's made out of isn't known exactly) Pure substances have a uniform chemical composition. Yet, the amounts of salt and water can vary from one salt solution to another. Sodium chloride, better known as table salt, is considered a pure substance because it is a homogeneous compound. E.g. For example, baking soda is a single kind of matter, known chemically as sodium hydrogen carbonate. A mixture is anything that is made of two or more pure substances. It is considered a substance because it has a uniform and definite composition. In other words, it is homogeneous no matter when you sample it. Answer:I hope it's helpful please mark me as brainliast Explanation:Ordinary table salt is called sodium chloride. All samples of sodium chloride are chemically identical. The particles in a pure substance can be identical element particles or identical compound particles. Its chemical formula is NaCl.Although made from two separate elements, a handful of salt is a pure substance not a mixture because it is a compound. A pure substance consists entirely of one type of atom or compound. So, all the particles in the substance, are the same, and there is only one type.