Atomic oxygen can then combine with more molecular oxygen to form ozone.

For example, when one oxygen and two hydrogen atoms combine to form a molecule of water, there is a release of energy.

At first, oxygen would quickly combine with other elements in Earth's crust, primarily iron, as it was produced.

By definition, fire is a chemical reaction in which oxygen and fuel combine to release heat.

The oxygen of the water combines with carbon, hydrogen and metals.

When enough oxygen had combined with the chair, it simply went off.

Once the oxygen combined with the camphor, it couldn't react with the silver.

One swipe with molecular hydrogen and Earth's oxygen would combine, making water and a lot of energy.

When silicon and oxygen combine together, you get silicates, rocks.

Fires occur when oxygen, fuel, and heat energy combine in a self-sustaining chemical reaction.