Which two types of matter are pure substances? A homogenous mixtures and elements B solutions and compounds C elements and compounds D mixtures and elements

elements and compounds

Explanation:

Pure substances contain the same type of particles in the substance. All the component particles in a pure substance have exactly the same composition and are present in exactly the same proportion.

An element consists of atoms of the a particular element in a specified arrangement. A compound is composed of atoms of elements joined together in a unique way and that arrangement is maintained throughout the substance. Hence these are pure substances.

1. they vary with a higher number because boiling is way hotter than melting