Pure substances that are physically combined make a mixture.
One way is if it can be physically combined.
The components of a mixture are physically combined.
Soduim is a pure substance. But it is a mixture because it was pshsically combined. Soduim is a pure substance. But it is a mixture because it was pshsically combined.
A pure substance can not be broken apart.
it has to be chemically combined into a new substance
Element.
A mixture is a substance composed of two or more components physically combined. An element is a pure substance composed of one kind of atom. A compound is a pure substance formed when atoms of two or more elements chemically combine.
mixture
Blackcoffe is a pure substance
A mixture is a combination of substances that are combines physically, but not chemically.
A mixture is a combination of substances that are combines physically, but not chemically.
A substance you can't physically change would be copper grains, and iron filings.