An alloy.
An element.
it depends on wht compound it its
substances that cannot be broken down chemically into other substances are
A chemically pure substance is a substance that cannot be separated expect by chemical means. For instance, water can be broken down by electrolysis into oxygen and hydrogen. Yet, it is still a pure substance because a chemical change must occur in order for this to happen.
It's a compound
Elements.
Substances that cannot be chemically broken down into simpler substances are called elements.
An element.
That would be an Element.
These are the chemical elements.
Robert Boyle
it depends on wht compound it its
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
substances that cannot be broken down chemically into other substances are
A pure substance that cannot be chemically broken down into simpler substances.
Elements are substances made of identical atoms which cannot be broken down to other substances. Matter is anything that occupies space and has mass.
A pure substance that cannot be broken down into simpler substances by physical or chemical means is an element. This is because Elements can't be broken down chemically into other substances because there is nothing to break them down into.