Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. boroyan eye associates, p.c. npi is 1437246899. The provider is registered as an organization entity type and is a single specialty group. The provider's business location address is:
A piece of aluminum foil contains only one kind of particle. Each aluminum particle is the same as every other aluminum particle. White table sugar is made of only sugar particles.Aluminum and table sugar are both examples of pure substances.A pure substance is a type of matter that contains only one kind of particle (Figure 3(a)). Other examples of pure substances include distilled water and salt.Uranium, used in nuclear power stations to produce electricity, is another pure substance. Water from your tap is not a pure substance. piece of aluminum foil contains only one kind of particle. Each aluminum particle is the same as every other aluminum particle. White table sugar is made of only sugar particles.Aluminum and table sugar are both examples of pure substances.
Most of the substances around us consist of molecules and are called compounds of various elements. Molecules are the smallest particle of a compound that has all the chemical properties of that compound. They are made up of two or more atoms, either of the same element or of two or more different elements.olecules and compounds contain their constituent elements in specific proportions that are characteristic of the compound. For example, water (H 2 O), a well known and simple compound, contains hydrogen and oxygen at a ratio of 2 to 1.