Chemicals

The term chemical substance is a precise technical term that is synonymous with chemical for chemists. The word chemical is used in general usage in the English speaking world to refer to both (pure) chemical substances and mixtures (often called compounds), and especially when produced or purified in a laboratory or an industrial process.

Def. Phytochemicals are chemicals of plant origin.

Phytochemicals are chemicals produced by plants through primary or secondary metabolism. They generally have biological activity in the plant host and play a role in plant growth or defense against competitors, pathogens, or predators.

Resources

 * Actinides
 * Aluminums
 * Argons
 * Berylliums
 * Borons
 * Bromines
 * Chlorines
 * Fluorines
 * Heliums
 * Hydrogens
 * Iodines
 * Kryptons
 * Leads
 * Lithiums
 * Materials
 * Mineraloids
 * Neons
 * Nickels
 * Nitrogens
 * Oxidanes
 * Oxidation numbers
 * Oxygens
 * Phosphoruses
 * Radons
 * Reactions
 * Rocks as chemicals
 * Thoriums
 * Xenons