Is Granite A Pure Chemical Substance
To a non chemist a pure substance is anything composed of a single type of material.
Is granite a pure chemical substance. Mixtures contain more than one chemical substance and they do not have a fixed composition. Just like granite marble is a mixture. A pure chemical substance is any matter that has a fixed chemical composition and characteristic properties. A pure substance can also be defined as a form of matter that has both definite.
A pure substance or chemical substance is a material that has a constant composition is homogeneous and has consistent properties throughout the sample. Oxygen for example is a pure chemical substance that is a colorless odorless gas at 25 c. Very few samples of matter consist of pure substances. It is considered a pure substance because it has a uniform and definite composition.
However unlike granite marble is typically more than 90 calcium carbonate so it might count as a pure substance. All matter consists of various elements and chemical compounds but these are often intimately mixed together. So option b sodium chloride is a right option. But there are exceptions to this definition.
A pure substance participates in a chemical reaction to form predictable products. Impure materials may be mixtures of elements mixtures of compounds. In chemistry a pure substance consists of only one type of atom molecule or compound. A pure substance is by definition composed of one compound.
Pure and impure chemical substances a pure element or compound contains only one substance with no other substances mixed in. However unlike granite marble is typically more than 90 calcium carbonate so it might count as a pure substance. Just like granite marble is a mixture. Common definition of a pure substance.
So in addition to elements compounds and alloys a pure substance might include honey even though it consists of many different types of molecules. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound. Ordinary table salt is called sodium chloride. In other words it is free of contaminants.