Substance - Department of Chemistry | Oregon State University
... Discuss the four quantum numbers (names, meanings, allowed values). n, the principal quantum number. This is also known as the radial quantum number, and defines the distance of the electron from the nucleus in the Bohr model. n also describes the azimuthal angular momentum. n takes on integral valu ...
... Discuss the four quantum numbers (names, meanings, allowed values). n, the principal quantum number. This is also known as the radial quantum number, and defines the distance of the electron from the nucleus in the Bohr model. n also describes the azimuthal angular momentum. n takes on integral valu ...
homework 2, due October 3rd
... In class we discussed the quantization of circular orbits of an electron around a nucleus considering only the Coulomb electrostatic force between the electron and the nucleus. Repeat the argument in the case of a modified interaction between electron and nucleus: assume the potential between them i ...
... In class we discussed the quantization of circular orbits of an electron around a nucleus considering only the Coulomb electrostatic force between the electron and the nucleus. Repeat the argument in the case of a modified interaction between electron and nucleus: assume the potential between them i ...
Learning material
... only a few atoms thereby ensuring that the alpha particles would hit at most one target atom. The results were a death blow to the plum pudding picture. Instead of passing straight through the diffuse charge, occasionally an alpha partite would be tuned through 180, back to the source. Rutherford re ...
... only a few atoms thereby ensuring that the alpha particles would hit at most one target atom. The results were a death blow to the plum pudding picture. Instead of passing straight through the diffuse charge, occasionally an alpha partite would be tuned through 180, back to the source. Rutherford re ...
Document
... R1 и R2 – auxilary resonator for excitation anf analysis of atoms. S – source of radiation at about 51 GHz. D – detector of atomic state: g or e . ...
... R1 и R2 – auxilary resonator for excitation anf analysis of atoms. S – source of radiation at about 51 GHz. D – detector of atomic state: g or e . ...
APS Practice Final 2011
... ____ 91. On a velocity-time graph, a line with a negative slope indicates that the object is a. speeding up. c. not moving. b. slowing down. d. traveling at a constant speed. ____ 92. When the velocity of an object changes, it is acted upon by a(n) a. force. c. momentum. b. inertia. d. deceleration. ...
... ____ 91. On a velocity-time graph, a line with a negative slope indicates that the object is a. speeding up. c. not moving. b. slowing down. d. traveling at a constant speed. ____ 92. When the velocity of an object changes, it is acted upon by a(n) a. force. c. momentum. b. inertia. d. deceleration. ...
Identify the following properties as either - Teach-n-Learn-Chem
... reasoning in developing his model Thomson’s model - protons and electron evenly distributed. No nucleus. Cathode Ray tube experiment. The cathode rays were attracted to a negatively charged plate. The atom must have negative charges (electrons). Atoms are electrically neutral and must possess positi ...
... reasoning in developing his model Thomson’s model - protons and electron evenly distributed. No nucleus. Cathode Ray tube experiment. The cathode rays were attracted to a negatively charged plate. The atom must have negative charges (electrons). Atoms are electrically neutral and must possess positi ...
South Pasadena · AP Chemistry
... Know how a mass spectrometer is used for comparing the masses of atoms. Explain that a mole of any element is actually made up of various isotopes in a constant percentage abundance. Calculate the average atomic mass of an element using the percent abundance and mass of each isotope. Calcula ...
... Know how a mass spectrometer is used for comparing the masses of atoms. Explain that a mole of any element is actually made up of various isotopes in a constant percentage abundance. Calculate the average atomic mass of an element using the percent abundance and mass of each isotope. Calcula ...
Matter is anything that occupies space and has mass. Examples
... Water has one of the highest specific heats. It takes a long time to heat up and it is slow to cool down. Air will expand when it is warm and this causes the wind to blow from the warmer area to the cooler area. ...
... Water has one of the highest specific heats. It takes a long time to heat up and it is slow to cool down. Air will expand when it is warm and this causes the wind to blow from the warmer area to the cooler area. ...
Schrodinger_Uncertainty
... • Outline how the Schrödinger model of the hydrogen atom leads to the idea of discrete electron energy levels (2). • the electron has wave properties; • the “electron wave” in the atom has to fit boundary conditions; • only certain wavelengths are allowed / standing waves by boundary conditions; • t ...
... • Outline how the Schrödinger model of the hydrogen atom leads to the idea of discrete electron energy levels (2). • the electron has wave properties; • the “electron wave” in the atom has to fit boundary conditions; • only certain wavelengths are allowed / standing waves by boundary conditions; • t ...
No Slide Title
... Group 8A Elements (ns2np6, n 2) Completely filled ns and np subshells. Highest ionization energy of all elements. No tendency to accept extra electrons. ...
... Group 8A Elements (ns2np6, n 2) Completely filled ns and np subshells. Highest ionization energy of all elements. No tendency to accept extra electrons. ...
AP Chap 2
... Atomic Number and Atomic Mass • Atoms of the various elements differ in number of subatomic particles • An element’s atomic number is the number of protons in its nucleus • An element’s mass number is the sum of protons plus neutrons in the nucleus • Atomic mass, the atom’s total mass, can be appro ...
... Atomic Number and Atomic Mass • Atoms of the various elements differ in number of subatomic particles • An element’s atomic number is the number of protons in its nucleus • An element’s mass number is the sum of protons plus neutrons in the nucleus • Atomic mass, the atom’s total mass, can be appro ...
Quantum Mechanics
... principle). Matter exhibits wave-particle duality; particles may exhibit both particle and wave properties, but not both at the same time (complementarity principle). Measuring devices are classical devices, and as such do not measure probabilities, but only classical properties. Quantum mechanical ...
... principle). Matter exhibits wave-particle duality; particles may exhibit both particle and wave properties, but not both at the same time (complementarity principle). Measuring devices are classical devices, and as such do not measure probabilities, but only classical properties. Quantum mechanical ...
A Student want to prepare 250mL of .10 M NaCl solution
... A student wants to prepare a 250mL sample of 0.10 M NaCl. Which procedure is the most appropriate? Molar mass of NaCl 58.4 g ·mol-1 A) Add 5.84g NaCl to 250mL of water B) Add 1.46g of NaCl to 250mL of water C) Dissolve 5.84g of NaCl in 50mL and Dilute to 250mL D) Dissolve 1.46g of NaCl in 50mL and ...
... A student wants to prepare a 250mL sample of 0.10 M NaCl. Which procedure is the most appropriate? Molar mass of NaCl 58.4 g ·mol-1 A) Add 5.84g NaCl to 250mL of water B) Add 1.46g of NaCl to 250mL of water C) Dissolve 5.84g of NaCl in 50mL and Dilute to 250mL D) Dissolve 1.46g of NaCl in 50mL and ...
Two valence electrons.
... elements by increasing atomic mass, leaving blank spaces where he was sure elements Dmitri yet to be discovered Mendeleev would fit. ...
... elements by increasing atomic mass, leaving blank spaces where he was sure elements Dmitri yet to be discovered Mendeleev would fit. ...
![L 35 Modern Physics [1] - University of Iowa Physics](http://s1.studyres.com/store/data/000679677_1-b925cf8c8f031b0f2b0c09a806312d20-300x300.png)
L 35 Modern Physics [1] - University of Iowa Physics
... • Niels Bohr, a Danish physicist, used the quantum concept to explain the nature of the atom. • Recall that the orbiting electrons, according to classical ideas, should very quickly radiate away all of its energy • If this were so, then we would observe that atoms emit light over a continuous range ...
... • Niels Bohr, a Danish physicist, used the quantum concept to explain the nature of the atom. • Recall that the orbiting electrons, according to classical ideas, should very quickly radiate away all of its energy • If this were so, then we would observe that atoms emit light over a continuous range ...
![L 35 Modern Physics [1] Modern Physics](http://s1.studyres.com/store/data/001558975_1-84d6e03bc786b63795533f59711ce2f4-300x300.png)
L 35 Modern Physics [1] Modern Physics
... from classical thinking. • In classical physics, energy can come in any amounts • In modern physics, energy is QUANTIZED i.e., comes in definite packets Æ photons of energy = h f. • In the PE effect energy is absorbed by the electrons only in discreet amounts ...
... from classical thinking. • In classical physics, energy can come in any amounts • In modern physics, energy is QUANTIZED i.e., comes in definite packets Æ photons of energy = h f. • In the PE effect energy is absorbed by the electrons only in discreet amounts ...
L34 - University of Iowa Physics
... • Niels Bohr, a Danish physicist, used the quantum concept to explain the nature of the atom. • Recall that the orbiting electrons, according to classical ideas, should very quickly radiate away all of its energy • If this were so, then we would observe that atoms emit light over a continuous range ...
... • Niels Bohr, a Danish physicist, used the quantum concept to explain the nature of the atom. • Recall that the orbiting electrons, according to classical ideas, should very quickly radiate away all of its energy • If this were so, then we would observe that atoms emit light over a continuous range ...
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.