Uric acid. Uric acid is a heterocyclic compound of carbon, nitrogen, oxygen, and hydrogen with the formula C5H4N4O3. It forms ions and salts known as urates and acid urates, such as ammonium acid urate. Uric acid is a product of the metabolic breakdown of purine nucleotides, and it is a normal component of urine. High blood concentrations of uric acid can lead to gout and are associated with other medical conditions including diabetes and the formation of ammonium acid urate kidney stones.
A pure substance or chemical substance is a material that has constant composition (is homogeneous) and has consistent properties throughout the sample. Here are examples of pure substances. Answer: Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).
Therefore, we can broadly categorize matter into two categories as pure substances and mixtures. Mixtures can be mainly divided into two, as homogeneous mixtures and heterogeneous mixtures. Pure Substance. Pure substance cannot be separated into two or more substances by any mechanical or physical method. Therefore, pure substance is homogenous. It has a uniform composition throughout the sample. Further, the properties of it are also uniform throughout the sample. Elements are pure substances. An element is a chemical substance, which consists of only a single type of atoms; hence, they are pure. There are about 118 elements given in the periodic table according to their atomic number. For example, the smallest element is the hydrogen.