its a element
substance because you can write it as a formula
Neither. Oxygen is an element, which is a pure substance and not a mixture.
Oxygen is an element, which is a pure substance.
Oxygen is an element and a pure substance.
Oxygen is a chemical element.
The O is a symbol for the element oxygen.
oxygen is a element because it is only made out of one substance and it oxygen ! xx
Oxygen is an element indicating that is a pure substance.
Oxygen is an element. It is a chemical substance that is made up of only one type of atom, specifically oxygen atoms.
Water is not an element, it is a compound composed of hydrogen and oxygen.
its an element. It is usually encountered as O2. There are other allotropic forms the best known is O3 ozone.
Oxygen is necessary for a substance to burn. It reacts with the substance in a chemical reaction known as combustion, releasing heat and light energy. Without oxygen, the substance will not be able to sustain a fire.