When is a particle classified as an atom a molecule or formula unit?

What is the ventral surface of a quadruped animal? What are the 2 particles in H2O? Where did Rimsky-Korsakov study? How do you work out the cellular respiration rate in moles of glucose per minute given the info that there is 2.4ml CO2 produced and a breathing rate of 14 breaths a minute.? What are the uses of loose leaf paper? What is the five processes of microevolution? Do stem cells grow faster than cancer cells? What causes a gas flame to turn orange? Total number of non metals? What type of land receves very little rainfall? How does a black hole travel through space? When the earth ocassionally reverses direction is called what motion? What does the electron do when an atom emits a photon? Can you freeze motor oil? Where is 34 north 132 east? What country did herpetology start in? What best describes how ACh changes the ion permeability of the sarcolemma? When a metal burns in the air does it give off carbon dioxide? What type of rock is likely to form next when extensive igneous rock is broken down by weathering? What city has 62N latitude and 150W longitute?