Proteins are polymers of amino acids. Polymers are large molecules made of similar or identical subunits called monomers. More » Science Chemistry

If a substance is not a macromolecule that consists of many monomers, then it is not a polymer. When monomers link up to form long chains, it is called polymerization. A polymer can conceivably consist of thousands of mo... More » Science Chemistry

Proteins are considered polymers because they are made up of monomers, and lipids are not considered polymers because they are not made up of monomers. In order for the basic unit that makes up the lipid or protein to be... More » Science Biology Cells
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A substance comprised of molecules that contain unbalanced localized charges (dipoles) is a polar substance. Polar substances tend to interact with other polar substances and rarely react to a significant degree with non... More » Science Chemistry

The molecules of one reactant are combined with those of another reactant to form a new substance during a chemical reaction. As the chemical bonds are broken, the positions of electrons change, resulting in a product wi... More » Science Chemistry

A monoatomic gas is a gaseous substance composed of molecules that each contain only one atom each rather than molecules formed by the bonding of two or more atoms. Examples of monoatomic gases are helium, argon and neon... More » Science Chemistry

Gelatin, when dissolved in water, is a colloid because the protein molecules that compose it, mostly derived from collagen, are much larger than usual dissolved molecules, but they remain evenly dispersed throughout the ... More » Science Chemistry