The substance is a chemical element.
because a substance cannot be decomposed into simplier substances by chemical or physical means
If you are not concerned about atoms, electrons, neutrons, protons and other sub atomic particles, but confine to chemical substances occurring in nature or man made, the substance that cannot be broken into simpler substances is an "element" (usually enumerated in a periodic table).A chemical element cannot be decomposed into a simpler substance.Elements. They are defined as substances in their simplest form and cannot be broken down or decomposed into any simpler substances. They include all elements in the periodic table of elements.
Chemical property, it cannot be decomposed by ordinary chemical change.
A substance that can not be decomposed into simpler substance by a chemical or physical means is a chemical element.
No. Fe (iron) is an element, the simplest type of chemical substance possible, and so it cannot be broken down by chemical means.
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.
These are the chemical elements.
No. Sodium is an element and elements cannot be broken down (decomposed) by a chemical change.
Rotting wood is a chemical change because the decomposed wood has different properties that cannot be reversed. Chemical changes alter the identity of a substance, whereas physical changes do not.
An element
element
An element.