Chemistry of Life

Naim Mckitthen- study guide

Water and its Characteristics

~ Adhesion: attraction of water to other substances

~ Cohesion: attraction of water molecules to each other

~ Polarity: when the centroid of the positive charge is different from the centroid of the negative charge.

~ Heat Storage: water can hold a lot of energy in it. it takes a long time to warm up and cool down.

~ pH: on the pH scale water is 0 so it is neither acidic or basic.

Macromolecule

~ Macromolecules: a large complex molecule such as nucleic acids and proteins.

~ Monomer: a molecule of low molecular weight capable of reacting with identical or different molecules of low molecular weight to form a polymer.

~ Polymer: a large molecule composed of many subunits.

~ Hydrolysis: the breakdown of a compound when it reacts with water.

~ Condensation polymerization: the opposite of hydrolysis because it release water molecules instead of using them.

~ Carbohydrates: any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose