Bohr model - Study guides, Class notes & Summaries

Acceleration - Any change in speed or direction Activation energy - the amount of energy needed to start a reaction All objects experience the same acceleration due to - gravity, but only in the absence of air friction Alloys - mixture of metals Alpha decay - a nucleus gives up a helium nucleus Amplitude - The height of the wave, how far you are from the equilibrium Angular Momentum conserved - Angular momentum = Mass * Velocity * Radius Ice Skater ex. As she pulls her arms in, velocity i...

AQA AS Physical Chemistry Exam Questions and Answers Who described atoms as solid spheres that make up different elements and when? - Answer- John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - Answer- John Dalton in 1803 Who discovered the electron and when? - Answer- JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New model named plum puddin...

©BRIGHTSTRS EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 MSE 201 Exam 1 Questions With Verified Answers Weight of electron - Answers9.11x10-31 weight of proton and neutron - Answers1.67x10-27 atomic number - Answersnumber of protons in nucleus of atom or the number of electrons in a neutral species amu - Answers1/12 mass of C12 atomic weight - Answersaverage weighted mass of all isotopes of an element electrons have _________ and _______ properties - Answerswavelike and particulat...

Atomic Mass Unit (amu) correct answers 1/12 the mass of a carbon-12 atom Bohr Model correct answers 1) Electrons revolve around the atomic nucleus in discrete orbitals 2) The position of any particular electron is defined by its orbital 3) The electron energies of electrons are quantized - electrons are permitted to have only specific values of energy Wave-Particle Model correct answers 1) Electron exhibits both wave-like and particle-like characteristics 2) Position of an electron is d...

Joseph (JJ) Thomson - Developed "plum pudding model" Interactions in x-ray tube - Happen at atomic level Ernest Rutherford - Model resembling tiny solar system Niels Bohr - Atoms have 3 particles Protons, Neutrons, and electrons binding energy - Energy needed to split up and atom Electron binding energy depends on - How close the electron is to the nucleus and how many protons are in the atom

BIO 1610 SLCC Final Exam Questions and Answers 100% Pass What makes something "living"? - -gas exchange -movement -interacts w environment -can reproduce -can adapt/grow/evolve 5 Themes in Book - -organiziation -information -matter&energy -evolution Species - type of organism Systematics - subfield in biology; study of evolutionary relationships Metabolism - overall set of chemical reactions (or energy conversions) that take place in a cell or organism Hypothesis - is tested...

DAT General Chemistry Exam Questions Correctly Answered. Atomic Number - CORRECT ANSWER number of protons found in that atom; low number; (Z) Mass Number - CORRECT ANSWER Protons + Neutrons; high number; (A) Atomic Mass - CORRECT ANSWER relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = - CORRECT ANSWER 1.66x10^-24 Atomic Weight - CORRECT ANSWER weight (g) of one mole (mol) of a given element (g/mol); the weighte...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

APSC 259 Materials Science I Question and answers already passed Ceramics - correct answer - Combination of metal and non-metal -Oxides, carbides, nitrides, borides -Very hard, strong, abraision resistant, brittle Polymers - correct answer -Natural rubber, plastic -Typically hydrocarbons with various additions -Low density -Good in specific conditions -Degeneration under UV Composites - correct answer -Combination of metal, ceramic, and polymer -Used in material engineerin...

Bohr-Rutherford Model of the Atom