CEM 141 Exam 3 Questions And Answers Already Graded A+

change of state from solid -> liquid -> gas ________ energy - requires energy needed to phase change from solid --> liquid --> gas comes from: - the surroundings when phases change from solid --> liquid --> gas, interactions are _______ between molecules - overcome change of state from gas --> liquid --> solid ______ energy - releases what happens to the energy from a phase change from gas --> liquid --> solid? -released to surroundings when phases change from gas --> liquid --> solid, interactions are _______ between molecules - formed what happens when a substance melts? - the interactions between the particles have to be overcome -- so that they can remove relative to each other (that's what allows a liquid to flow) melting and boiling points provide an estimate of: - the strength of the attractive interactions between particles which is stronger?? covalent bond/LDF - covalent bond in a covalent bond, what is formed? - a new molecule what is a LDF caused by? - fluctuating charge distributioncovalent bonds are the sharing of: - valence electrons LDF's increase with.... - the size of electron cloud covalent bonds are caused by: - attraction between electrons of one atom and the nucleus of another LDFs are present where??? - between all molecular species is it hard or easy to predict covalent bond strength? - hard when are covalent bonds present? - when atomic orbitals interact constructively covalent bonds are located: - between molecules/networks LDFs occur between: - separate molecules diamond has a high/low melting point??? - high graphite has a high/low melting point?? - high diamond is hard/soft? - hard