A chemical reaction has occurred.
An element cannot be broken down into a simpler substance by chemical means.
elements
An Element ... A substance that cannot be broken down into simpler substances by chemical means.
An element.
Substance A is an element, substance Z is a compound.
A compound is 2 elements chemically combined, though it is unseparatable, it is made up of 2 or more elements. But since a compound cannot be broken down into elements, after the elements are chemically combined, that makes a compound a pure substance
A pure substance that cannot be broken down is an Element.
An element cannot be broken down into a simpler substance by chemical means.
Element is the simplest form of substance while compound is a substance of combined elements. Compound can be broken down into simpler substances which maybe are another form of compounds or just in the simplest state which are elements
Copper is an element and can not be broken down to a simpler substance.
An element.
A mixture can be defined as a material composed of two or more different substances that are not chemically combined. This makes nitrogen a pure substance.
A substance that cannot be broken down is a pure substance
T=It is true that compounds is a type of substance. This substance cannot be broken down.
Elements are substances that coonono be broken down in a garbage disposal.
an element
elements