A compound
Element
Is a pure substance such as an element. Remember elements can not be broken down further by chemical or physical processes.
An element is a substance that cannot be broken down into a simpler substance by chemical means. Each element is represented by a unique symbol on the periodic table.
cannot be broken down into simpler substances by chemical means
An element cannot be broken down into a simpler substance by chemical means.
compounds CAN be decomposed elements CANTThe answer would be Mercury because it is an element and can't be broken down by chemical means. but methane, ethanol and ammonia can be broken down by physical means because they are compounds.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
an element is a substance that cannot be broken down into a simpler form by chemical means
element
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.
A chemical element, or an element, is a material which cannot be broken down further or changed into another substance by using chemical means.
Fire is not an element, it is a result of a chemical reaction. Iron is an element, it is a chemical substance that cannot be broken down into simpler substances by chemical means.