Lesson 1, Topic 1
In Progress

03-Inorganic Chemistry

March 28, 2021

Organic molecules contain carbon-carbon covalent bonds and/or carbon-hydrogen covalent bonds. Inorganic molecules do not. Organic molecules are generally larger and more complex than inorganic molecules.

Water is an inorganic compound essential to life. Water is a solvent, that is, a liquid in which solutes are dissolved, and it forms aqueous solutions in the body.

Water is involved in chemical reactions, which are essential to the functioning of the body. Dehydration synthesis is a chemical reaction in which water is removed from small molecules so they can be strung together to form a larger molecule. A hydrolysis reaction involves the addition of water to the subunits of a large molecule to break it apart into smaller molecules.

Chemical reactions always involve energy transfers, as when energy is used to build ATP molecules. Chemical equations show how reactants interact to form products and an arrow in the written equation separates the reactants from the products.

Water molecules dissociate to form equal amounts of hydrogen ion and hydroxide ion. An acid is a substance that shifts the hydrogen ion and hydroxide ion balance in favor of hydrogen ion. A base is a substance that shifts the hydrogen ion and hydroxide ion balance against, or away from, hydroxide ion, which is the opposite of an acid. It is also known as an alkaline.

The pH is a mathematical expression of the relative hydrogen ion concentration in an aqueous solution. A value of 7 is neutral, in which neither acidic nor basic conditions are present. If the pH value is above 7, the solution is basic, and a solution is acidic if the pH value is below 7. Neutralization occurs when acids and bases mix and form salts. Buffers form chemical systems that absorb excess acids or bases, thereby maintaining a relatively stable pH.