you can't oxygen is an element, it cant be made by mixing anything other then oxygen
Oxygen is the gas that is required for respiration.
Iron and oxygen
Carbon, oxygen and nitrogen.
Carbon Dioxide (CO2) can be formed by the addition of the element carbon (C) and oxygen gas (O2).
oxygen
oxygen
Oxygen. It supports combustion.
They pop and explote make the gas chemicals to spread...
Carbon dixode (CO2)
Oxygen
oxygen
Oxygen