1. Oxygen as an element:
* Oxygen (O) is an element, meaning it's a pure substance made up of only one type of atom.
* There is only one type of atom in oxygen: the oxygen atom.
* Oxygen atoms have 8 protons and 8 neutrons (in the most common isotope).
2. Oxygen gas (O2):
* Oxygen gas (O2) is what we breathe. It's a molecule made up of two oxygen atoms bonded together.
* Therefore, there are 2 oxygen atoms in a single molecule of oxygen gas (O2).
3. Ozone (O3):
* Ozone (O3) is another form of oxygen with three oxygen atoms bonded together.
* There are 3 oxygen atoms in a single molecule of ozone (O3).
In summary:
* Oxygen the element has one type of atom: the oxygen atom.
* Oxygen gas (O2) has two oxygen atoms.
* Ozone (O3) has three oxygen atoms.
