oxygen
Elements are substances that cannot be broken down into any simpler substances. Hence they cannot be broken down by chemical methods. They may change in appearance if physical methods, but chemically, they still remain as the element.
The atom cannot be broken by chemical methods.
This the atom; it is indestructible by chemical methods.
This is the atom, unbreakable by chemical methods.
Substance that cannot be changed into a simpler substance under normal laboratory conditions are elements. A physical blend of two or more substances that are not chemically combined is a mixture.
Yes, but only with physical methods.
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.
All substances can be broken into any other substances (or elements) by chemical or physical methods.
Impossible by chemiacal methods
This is the atom of a chemical element (of course by chemical methods).
An example of a material that cannot be broken down into simpler substances is an element like gold or oxygen. Elements are composed of one type of atom and cannot be chemically broken down into simpler substances through ordinary chemical reactions.
Chloroform is a molecule.