Bohr atom - Study guides, Class notes & Summaries

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 weighted average of all the masses (not the weights) of an element, w...

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...

General Chemistry ACS EXAM Review 168 Questions with Verified Answers Rutherford's Gold Foil Experiment - CORRECT ANSWER proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons nucleus - CORRECT ANSWER contains all the positive charge and nearly all the mass of the atom James Chadwick - CORRECT ANSWER discovered the neutron cathode rays - CORRECT ANSWER move from negative electrode to positive electrode (like electrons in a voltaic cell) Thompson...

Atom the basic building block of matter that make up everyday objects Nucleus (atom) the center of an atom that contains the protons and neutrons Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:02 / 0:15 Full screen Electron Cloud the area around the nucleus of an atom where electrons are found Protons positive charged subatomic particles found in the nucleus Neutrons neutral charged subatomic particles fou...

CLEP Chemistry Review Practice Questions 2024. John Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom Robert Millikan - correct answer Calculated ...

Introduction to Quantum Mechanics Graded A+ Back to Bohr: Bohr gave us Quantization Quantization means electrons can only exist in certain discrete energy levels (like a staircase, they can only completely be on the first or second stair but never in between stairs different distances from ground) If you recall rings= orbits e- must be in a _______ and e- are different distances(or E) from ________ orbit; nucleus Bohr was Bad: Bohr model of the atom could predict the ____________ _...

BIO 1610 SLCC Final Exam Marking Scheme New Update (Verified Pass) What makes something "living"? - Answers - -gas exchange -movement -interacts w environment -can reproduce -can adapt/grow/evolve 5 Themes in Book - Answers - -organiziation -information -matter&energy -evolution Taxonomy - Answers - the naming and classification of organisms Species - Answers - type of organism Morphological Species Concept - Answers - external form Biological Species Concept - Ans...

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...

What does it mean if said that energy is quantized? and what confirms this? - correct answer only certain energy states are allowed in an atom, Line spectra of elements Describe the Bohr model of atom theory - correct answer 1. e-'s are limited to certain energy states 2. Energy levels:

RADT 1065 Chapter 2 Test Questions and Answers All Correct How many atoms are there in one molecule of sodium bicarbonate (NaHCO3)? - Answer 6 Which of the following physicists had a major part in describing the atom as we know it today? - Answer Bohr The periodic chart of elements is attributed to: - Answer Dimitri Mendeleev Rutherford made what significant contribution to science? - Answer description of the nuclear atom The difference between x-rays and gamma rays is: - An...