Molecule
Definition 1 of 3
Pro Tip 1/3
Chemical Identity
Defines a specific substance, with unique characteristics distinct from other materials. Salt is a molecule composed of sodium and chloride.
Pro Tip 2/3
Not Visible
Molecules are too small to be seen with the naked eye; scientific models represent them. The structure of a DNA molecule is often shown with a double helix model.
Pro Tip 3/3
Essential Vocabulary
Knowing the word molecule is crucial when discussing science topics, especially in chemistry. The lecture explained how molecules react with one another during a chemical reaction.