Jimmy developed a model to show the difference between pure substances and mixtures

Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties.

Explanation:

A matter which cannot be separated into any other kind of matter using the chemical or physical process is called pure substances. A pure substance has the same color, composition, and texture. An element consisting of a single compound with a definite composition, physical and chemical properties are called pure substances.A combination that has as of many substances that are not united using a chemical procedure or any process is known as mixtures. A mixture does not exist in fixed proportions, and most of the natural substances are mixtures.

I’m guessing you’re more alert to yourself or your surroundings if you’re more concentrated