Part of Combined Science Atomic structure and the periodic table For example, magnesium oxide is made up of two elements, magnesium and oxygen. Its formula is MgO. This shows that it has one atom of ...

For example, magnesium oxide is made up of two elements, magnesium and oxygen. Its formula is MgO. This shows that it has one atom of magnesium for every one atom of oxygen.

Discover what sugar is made of, how it forms, and its chemical name and formula. Learn about its properties and everyday uses in food and energy.

The universe is flooded with billions of chemicals, each a tiny pinprick of potential. And we’ve only identified 1% of them. Scientists believe undiscovered chemical compounds could help remove ...