'Energy level' diaporamas de présentation

Air Force Family Member Programs FitFactor Youth Fitness and Health Initiative. As a society, we can no longer afford to make poor health choices such as being physically inactive and eating an unhealthy diet; these choices have led to a tremendous obesity epidemic.

Five Tips for Effective Stress Management. Laughter. Spending time with people who enjoy a good laugh. Seeing a funny movie after a very stressful day Laughter is perhaps the best way to relieve stress. Planning . Thinking ahead so that you avoid the stress of cramming in for tests

Have a go at the element word search, use your periodic tables to help you!. Access to Science: Chemistry. Week 2 electronic configuration, basic and advanced. Are you ready to learn? Lab notebook out and a pen No food out, drinks away Phones on silent and in your bag

Electron Configurations. Mrs. Nielsen Honors Chemistry. Atomic Spectra and Niels Bohr. One view of atomic structure in early 20th century was that an electron (e-) traveled about the nucleus in an orbit. e- can only exist in certain discrete orbits QUANTIZED energy levels. Quantum Theory.

General Physics (PHY 2140). Lecture 16. Modern Physics Atomic Physics Early models of the atom Atomic spectra Bohr’s theory of hydrogen De Broglie wavelength in the atom Quantum mechanics and Spin. Chapter 28. http://www.physics.wayne.edu/~alan/2140Website/Main.htm. Lightning Review.

Light Emitting Diode: LED. What is an LED?. Light-emitting diode Semiconductor Has polarity. When current flows across a diode. Negative electrons move one way and positive holes move the other way. LED: How It Works. The wholes exist at a lower energy level than the free electrons.

Electron Orbitals. Cartoon courtesy of lab-initio.com. The Bohr Model of the Atom. I pictured electrons orbiting the nucleus much like planets orbiting the sun. But I was wrong! They’re more like bees around a hive. Neils Bohr. Quantum Mechanical Model of the Atom.

Chapter 7 Atomic Structure and Periodicity. 7.1 Electromagnetic Radiation. electromagnetic radiation : form of energy that acts as a wave as it travels includes: visible light, X rays, ultraviolet and infrared light, microwaves, and radio waves

CHEMISTRY Matter and Change. Chapter 6: The Periodic Table and Periodic Law. Table Of Contents. CHAPTER 6. Section 6.1 Development of the Modern Periodic Table Section 6.2 Classification of the Elements Section 6.3 Periodic Trends. Click a hyperlink to view the corresponding slides.

Electron Configuration and Orbital Notation. Dmitri Mendeleyev. Father of the Modern P.T. Periods and Group. Period – horizontal row on P.T. Each period represents an energy level (think back to models of the atom)

Chemistry Chapter 5. Electrons in Atoms. 5.3 Electron Configuration. Objectives: 1. Apply the Pauli exclusion principle, the Aufbau principle and Hund’s rule to write electron configurations using orbital diagrams and electron configuration notation

UNDERSTANDING MOLECULAR GEOMETRIES. PREDICTED BY VSEPR. H. H. C. H. H. FROM THE PERSPECTIVE OF. HYBRIDIZATION OF ATOMIC ORBITALS. Electron: Both wave and particle. Electron: Both wave and particle. FORCE & ENERGY. The forces at work are: Electromagnetic:

BELLWORK 10/27/16. QUANTUM MODEL OF THE ATOM – Day 2 Review. Organizes the electrons into 4 orbitals found on different energy levels. The four orbitals are … .s, p,d, f. ....... The “ s ” orbital can hold a maximum of ____ 2 electrons.

Electron Configuration and Chemical Periodicity-EXERCISE. Observing the Effect of Electron Spin. principal. n. positive integers (1, 2, 3,…). orbital energy (size). angular momentum. l. integers from 0 to n -1.

Subshells and Orbitals. Quantum Mechanics. Describes the arrangement of electrons in atoms in terms of: Main or principal energy levels (n) Energy subshells Orbitals (space occupied within the atom). Principal Energy Levels (n). Contain electrons that are Close in energy

Honors Chemistry Chapter 6. The Periodic Table. 6.1 Early Attempts @ Classification: Dobereiner & Newlands. 1817 – Johann Dobereiner found Ca , Ba, & Sr had similar props Atomic mass of Sr was ~ midway betw Ca & Ba Grouped them into Triads Found several triads w/ similar props

TOPIC 3 PERIODICITY. 3.1 PERIODIC TABLE. The arrangement of elements in the periodic table helps to predict their electron configuration. NATURE OF SCIENCE (1.9)

Molecular Geometry. Bonding. Covalent bonds occur when atoms are at an ideal distance from one another. At this distance attractive forces predominate repulsive forces. Too close the atoms repel each other. Too far away they do not attract. Bonding. Polarity of Polyatomic Molecules.

Quantum Theory. Every electron on an atom is in a definite state (energy level) with a definite energy. In order for an electron to change energy levels, a photon must be either absorbed or emitted, governed by Δ E = hc/ λ

Early Chemistry. Early Chemists only believed in 1 element: Dirt Later Chemists believed in 4 elements: Air Earth Fire Water Various combinations of these produced various compounds. Basic Chemistry. All Matter in universe is composed of Atoms