What do you think you would observe when
molecules break apart or bonds form between atoms
to make new molecules?
Type answer here

Molecules—like the ones that make up your body—are just collections of atoms held together by chemical bonds. In many ways, they're a lot like Tinkertoy® building projects. In fact, if you take organic chemistry, you’ll most likely buy a model set that looks suspiciously similar to Tinkertoys®:

Ball-and-stick model of the atom proline made using a modeling kit.

Ball-and-stick model of the atom proline made using a modeling kit.

Just as you can put Tinkertoy® wheels together in different ways using different stick connectors, you can also put atoms together in a different ways by forming different sets of chemical bonds. The process of reorganizing atoms by breaking one set of chemical bonds and forming a new set is known as a chemical reaction.

Explanation: