A Markov chain is a discrete random process with the property that the next state depends only on the current state (wikipedia). A Markov chain is a discrete random process with the property that the next state depends only on the current state (wikipedia). So $P(X_n | X_1, X_2, \ldots X_n-1) = P(X_n | X_{n-1})$.
Some people find molecules and compounds confusing. Here's how to remember the difference. If you join two different chemical elements together, you can often make a completely new substance. Glue two atoms of hydrogen to an atom of oxygen and you'll make a single molecule of water.
Best Answer: Yes, molecules are made from atoms. Elements-hydrogen, oxygen, chlorine... All the elements that exist are indicated in the Periodic Table. These elements exist as single atoms (e.g. neon, argon), two atoms covalently joined together (e.g. oxygen, hydrogen) and as macromolecules (e.g. diamond).lements-hydrogen, oxygen, chlorine... All the elements that exist are indicated in the Periodic Table. These elements exist as single atoms (e.g. neon, argon), two atoms covalently joined together (e.g. oxygen, hydrogen) and as macromolecules (e.g. diamond).