The cost of attending University of Florida for in-state students without financial aid is $6,381 USD. The cost for out-of-state students without financial aid is $28,659 USD.
Elements, Atoms, and Molecules. For a more advanced list of resources on atoms, elements and compounds. Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen. The smallest particles of matter are called atoms.
Compounds are pure substances made of atoms of two or more elements chemically combined in fixed ratios. Compounds must meet all of these criteria: Compounds are pure substances and not mixtures. Compounds are pure substances and not mixtures. 2  For example, table salt is not a compound because it is a mixture of sodium chloride, dextrose and calcium silicate (to keep it from clumping in high humidity) and potassium iodide (an important nutrient necessary for proper thyroid function).