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