A material that is composed of only one type of parti

A material that is composed of only one type of particle is known as a pure substance. This can be either an element or a compound.

Step 1: Understand the definition of a pure substance. A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample.

Step 2: Identify the types of pure substances. These can be elements, which are made of one type of atom, or compounds, which are made of molecules that contain two or more different types of atoms.

Step 3: Apply this knowledge to the material in question. If the material is made up of only one type of particle, it is a pure substance.

Step 4: Determine whether the material is an element or a compound. If the particles are all the same type of atom, the material is an element. If the particles are molecules made up of different types of atoms, the material is a compound.