why is it impossible to draw a distinction between natural substances and chemical substances?

Because the geometrical patterns are semi a to the b molecules + 4a = the molecular structure of both.

Hope that helps :)

thank u so much it did

Drawing a distinction between natural substances and chemical substances is challenging because all substances, regardless of their origin, are fundamentally composed of chemicals. The term "chemical" refers to any substance that has a distinct molecular composition. Every substance, whether it is found in nature or synthesized by humans, consists of molecules made up of atoms bonded together.

For example, water is a natural substance found in rivers, lakes, and oceans. Its chemical formula is H2O, meaning it is composed of two hydrogen atoms bonded to one oxygen atom. Similarly, sodium chloride, commonly known as table salt, is a chemical substance that can be found naturally in salt mines or extracted from seawater. Its chemical formula is NaCl, representing one sodium atom bonded to one chlorine atom.

The distinction between natural and chemical substances often arises from the way humans interact with them. Natural substances are typically those that occur in nature without human intervention, such as plants, minerals, or animal byproducts. On the other hand, chemical substances are often associated with human-made products or compounds created through various chemical processes.

Therefore, it is not accurate to draw a clear distinction between natural substances and chemical substances, as all substances have a chemical composition. The categorization of substances as natural or chemical primarily depends on their origin and context of use.