Unit 2 Atomic structure
... 14.2 The quantum theory • The work of German physicist Werner Heisenberg (1901–1976) led to Heisenberg’s uncertainty principle. • The uncertainty principle explains why a particle’s position, momentum or energy can never be precisely determined. • The uncertainty principle exists because measuring ...
... 14.2 The quantum theory • The work of German physicist Werner Heisenberg (1901–1976) led to Heisenberg’s uncertainty principle. • The uncertainty principle explains why a particle’s position, momentum or energy can never be precisely determined. • The uncertainty principle exists because measuring ...
Presentation
... They are the smallest particle of a substance that still retains the properties of that substance and is composed of 2 or more atoms. ...
... They are the smallest particle of a substance that still retains the properties of that substance and is composed of 2 or more atoms. ...
Chemical Bond – a force that holds two atoms together, the bond
... Chemical Bond – a force that holds two atoms together, the bond could be between two elements that are the same element or different elements. Ionic Bond – an electrostatic force between two different atomic elements (atomic nonmetal and an atomic metal) in which the atomic nonmetal steals the avail ...
... Chemical Bond – a force that holds two atoms together, the bond could be between two elements that are the same element or different elements. Ionic Bond – an electrostatic force between two different atomic elements (atomic nonmetal and an atomic metal) in which the atomic nonmetal steals the avail ...
Atoms, Ions and Molecules
... Atomic Theory of Matter 4. Chemical reactions involve the rearrangement of atoms. No new atoms are created or destroyed. Modern research has altered this proposal. Atoms are not indestructible and may lose their identity when split during nuclear reactions. However Dalton’s proposal remains true, ...
... Atomic Theory of Matter 4. Chemical reactions involve the rearrangement of atoms. No new atoms are created or destroyed. Modern research has altered this proposal. Atoms are not indestructible and may lose their identity when split during nuclear reactions. However Dalton’s proposal remains true, ...
Rutherford Scattering
... Never express yourself more clearly than you are able to think. Prediction is very difficult, especially about the future. - Niels Bohr ...
... Never express yourself more clearly than you are able to think. Prediction is very difficult, especially about the future. - Niels Bohr ...
Study Notes
... Strategies for Studying: • DO your study notes!! • Look at the figures (pictures) and read the captions. • Read the chapter summary. • Practice with the chapter review. • Review pages in Reading-Note Taking Guide (workbook) Location in atom ...
... Strategies for Studying: • DO your study notes!! • Look at the figures (pictures) and read the captions. • Read the chapter summary. • Practice with the chapter review. • Review pages in Reading-Note Taking Guide (workbook) Location in atom ...
WAVE MECHANICS AND QUANTUM NUMBERS
... 2. supported by the facts that electrons undergo diffraction and interference 3. Werner Heisenberg 1927- Heisenberg Uncertainty Principle: it is impossible to simultaneously identify the position and velocity of an electron, or any particle. 4. wave mechanics looks to suggest the locations of electr ...
... 2. supported by the facts that electrons undergo diffraction and interference 3. Werner Heisenberg 1927- Heisenberg Uncertainty Principle: it is impossible to simultaneously identify the position and velocity of an electron, or any particle. 4. wave mechanics looks to suggest the locations of electr ...
Standard EPS Shell Presentation
... the energy difference between the two levels. The energy comes out as different colors of light. ...
... the energy difference between the two levels. The energy comes out as different colors of light. ...
Chp 5 Guided Reading Notes and Vocabulary
... 11. Is the following sentence true or false? The emission spectrum of an element can be the same as the emission spectrum of another element. __________ An Explanation of Atomic Spectra 12. What is the lowest possible energy of an electron called? __________ 13. Only electrons moving from __________ ...
... 11. Is the following sentence true or false? The emission spectrum of an element can be the same as the emission spectrum of another element. __________ An Explanation of Atomic Spectra 12. What is the lowest possible energy of an electron called? __________ 13. Only electrons moving from __________ ...
AtomLightEmissQuantum
... The energy of the emitted photon is related to the frequency, given by the equation E = hf (proposed by Max Planck) ...
... The energy of the emitted photon is related to the frequency, given by the equation E = hf (proposed by Max Planck) ...
In a mass spectrometer, charged particles are injected into a
... region of uniform magnetic field (all with the same speed), where they travel along circular trajectories and, in this example, are collected after completing one-half of a complete circular orbit. If different mass isotopes are injected, they will trace different paths and be collected at different ...
... region of uniform magnetic field (all with the same speed), where they travel along circular trajectories and, in this example, are collected after completing one-half of a complete circular orbit. If different mass isotopes are injected, they will trace different paths and be collected at different ...
Indiana University Physics P301: Modern Physics Review Problems
... (b) What are the boundary conditions at x = 0 and x = L? Enforce these conditions to find the allowed energies of the system. (c) Are there conditions for which no solution is possible? Explain. 2. You are putting the electrical wiring in your new house, and you are considering using aluminum wiring ...
... (b) What are the boundary conditions at x = 0 and x = L? Enforce these conditions to find the allowed energies of the system. (c) Are there conditions for which no solution is possible? Explain. 2. You are putting the electrical wiring in your new house, and you are considering using aluminum wiring ...
What is the World Made of?
... Light behaves both as a wave and a particle ( photo-electric effect) Radioactivity: some atoms are unstable and emit different types of rays ...
... Light behaves both as a wave and a particle ( photo-electric effect) Radioactivity: some atoms are unstable and emit different types of rays ...
The end of classical physics: photons, electrons, atoms
... Light behaves both as a wave and a particle ( photo-electric effect) Radioactivity: some atoms are unstable and emit different types of rays ...
... Light behaves both as a wave and a particle ( photo-electric effect) Radioactivity: some atoms are unstable and emit different types of rays ...
What is Light?
... • Actual makeup of the atom was still a matter of speculation • Problems… • Max Planck’s quantized energy idea was in direct opposition to the predictions of classical mechanics, although the fact that it worked was irrefutable • “Wave-Particle Duality” still a troubling idea ...
... • Actual makeup of the atom was still a matter of speculation • Problems… • Max Planck’s quantized energy idea was in direct opposition to the predictions of classical mechanics, although the fact that it worked was irrefutable • “Wave-Particle Duality” still a troubling idea ...
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.