Element

An element is a substance that is made entirely from one type of atom

Trace Element

a chemical element present only in minute amounts in a particular sample or environment.

Compound

a thing that is composed of two or more separate elements; a mixture.

Chemical Reaction

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

Reactant

a substance that takes part in and undergoes change during a reaction.

Product

an article or substance that is manufactured or refined for sale.

Molecule

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Marcomolecule

a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

Carbohydrates

Carbohydrates are the sugars, starches and fibers found in fruits, grains, vegetables and milk products