Question

Fill in the Venn Diagram below with similarities and differences between
pure substances and mixtures.
Homogeneous
Homogeneous/Heterogeneous
It has fixed boiling point
It has varying boiling point
It melts completely
Some portion seems to be not melting
Mixture
Substance​

Answer 1

Answer:

A pure substance is a form of matter that has a constant composition (meaning that it is the same everywhere) and properties that are constant throughout the sample (meaning that there is only one set of properties such as melting point, color, boiling point, etc. throughout the matter). A material composed of two or more substances is a mixture. Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound.