You can find these elements basically anywhere on earth, every second, your body is in contact with it. Its in the food you eat, and in the nostrils and mouth you breath through. If we lost contact with oxygen, we would go extinct within minutes.
Oxygen appears as a light blue in gas form up close, it doesn't have a texture because it is a gas. Oxygen is found in every other element. When anything undergoes a combustion reaction, it produces CO2 and H2O