The substance is a compound, which forms chemical bonds that cannot be physically separated, but only by a chemical change.
An element cannot be separated into simpler substances by chemical means.
studyisland answer : water
element
element
You think to an atom.
Is a pure substance such as an element. Remember elements can not be broken down further by chemical or physical processes.
Sodium can be separated into simpler substances only by chemical means. Water, salt, and gold are pure substances that cannot be separated into simpler substances by chemical means.
An "element"
An element is a pure substance that cannot be separated into simpler substances by physical or chemical means. Atoms are the smallest particles in which an element can be divided and still retain its properties.
An element.
physical means only
Salt water