Use the animation to show students a ball model of a water molecule (H 2 O) and post the water molecule card. Explain that a water molecule has two hydrogen atoms and one oxygen atom. Ask students to ...

Hydrogen is an element; it exists naturally as a molecule. Each hydrogen molecule is made up of two hydrogen atoms. In hydrogen cars hydrogen reacts with oxygen in a fuel cell, making electricity ...

In the water molecule, the oxygen and hydrogen atoms share electrons in covalent bonds. There are a total of 10 protons and 10 electrons, so the water molecule is neutral. The electron cloud model ...

Instead of instant fragmentation, a neutral hydrogen molecule (H₂ ... environments is essential for refining models of cosmic chemistry. This molecule is responsible for many fundamental ...

"Molecular models of biological polymers — reliable ... We took three of the cyclically hydrogen bonded polypeptide chains from the polyglycine II structure, built them and after rotating ...