Msu - Cem 141 Exam 1 Questions With 100% Correct Answers 2024

What happens to atoms when they overlap during a London Dispersion Force (LDF)? {Ans: -The kinetic energy decreases -The potential energy increases -The because repulsive and repel each other. -This happens because both atom's electron clouds are overlapping.}Kinetic Energy {Ans: -Individual objects do NOT have kinetic energy. -Require 2 or more objects. -As distance decreases (-), kinetic energy increases (+).}Gold Foil Experiment {Ans: An experiment by Rutherford that shot radioactive substance at a piece of gold foil and theoretically, the substance should go through; however, some particles get deflected back to the source. Therefore, this proved that there was a positive charged particle in an atom: the proton.}Cathode Ray Tube {Ans: An invention by JJ Thompson that involved a glass tube consisting of 2 electrodes under very low pressure. When high voltage is emitted, "particles" moved toward the anode. This lead to the discovery of the electron. The ray moved from Cathode to Anode and the metal (anode) changed which didn't effect the ray. This proved that all electrons are from an atom.}Ernest Rutherford {Ans: Identified the positive (+) charged particle (proton) in the centre of the atom.}Energy (2 Types) {Ans: -Kinetic Energy -Potential