CHEM 210 LATEST ACTUAL UPDATED QUESTIONS AND ANSWERS SURE A.pdf

CHEM 210 LATEST ACTUAL UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔What is the heat equation? - ✔✔q = mcΔT

✔✔What is enthalpy (ΔH)? - ✔✔Heat at constant pressure

✔✔What is the difference between exothermic and endothermic? - ✔✔Exothermic
releases heat (ΔH negative); Endothermic absorbs heat (ΔH positive)

✔✔What is calorimetry? - ✔✔Measuring heat transfer

✔✔How does a bigger atom affect LDF and boiling point? - ✔✔Stronger LDF, which
increases the boiling point

✔✔What unit must temperature be in for gas laws? - ✔✔Kelvin

✔✔What determines the amount of product in a reaction? - ✔✔The limiting reactant

✔✔What is the sign of ΔH for an endothermic reaction? - ✔✔Positive

✔✔ What are intermolecular forces? - ✔✔Attractions between molecules (not bonds
within molecules)

✔✔Rank IMFs from weakest to strongest. - ✔✔London Dispersion < Dipole-Dipole <
Hydrogen Bonding < Ion-Dipole

✔✔What causes London Dispersion Forces? - ✔✔Temporary electron movement
creates instantaneous dipoles (present in all molecules)

✔✔What factors increase London Dispersion Force strength? - ✔✔More electrons
(bigger atoms) and greater surface area (long/flat molecules)