PPT-Energy and Electrons

WaveParticle Duality JJ Thomson won the Nobel prize for describing the electron as a particle His son George Thomson won the Nobel prize for describing the wavelike nature of the electron The electron is a particle. Reminder: A.S. 13.1.5-13.1.7 due . Monday 3/23/15. A.S. . 13.1.8-13.1.13 . due Tuesday . 3/24/15. WebAssign. Quantum #3 due Tuesday . 3/24/15. When a gas is heated to a high temperature, or exposed to a large electric field. Energy that travels as a wave through space. Wavelength –. λ – distance between corresponding points on adjacent waves. Frequency – f – waves per second. Spectrum. Breakdown of electromagnetic radiation by increasing wavelength. Chapter Big Idea . The atoms of each element have a unique arrangement of electrons.. Section 1: Light and Quantized Energy. Essential Questions & Vocabulary. How do the wave and particle natures of light compare?. Models of the Atom-History in Models. Democritus. (450BC, GR): smallest bit that is still that element.. Joseph Proust . (1794 FR): proposed that compounds form in definite proportions. Proust’s experiments and law influenced Dalton.. Chapter 4 . (Electron Configurations). Electron Behavior. Scientists began to understand how electrons acted by observing the way that light interacts with matter.. In your notebook, answer the question:. Why?. Energy = the ability to do work. Energy cannot be created nor destroyed, only . transformed . Electromagnetic energy (sun) .  chemical . . bond energy heat energy. Increase in order. in. Atoms. 1. I Can…………. Describe the Bohr Planetary Model of an atom. Describe light and how atoms emit light ( atomic emission spectra). Describe ground state vs. excited state. Describe the quantum mechanics model of an atom – 3 parts. Arrangement of the Electrons Chapter 4 (Electron Configurations) Electron Behavior Scientists began to understand how electrons acted by observing the way that light interacts with matter. In your notebook, answer the question: Cellular Respiration . Cells harvest chemical energy stored in molecules and use this to generate ATP. . Organic compounds store energy in their arrangements of atoms.. Catabolic (releases energy). Exergonic. use flame tests to provide evidence . that energy is absorbed or released in discrete units when electrons move from one energy level to another . explain how flame tests provide evidence . that energy is absorbed or released in discrete units when electrons move from one energy level to another . •Explain the factors that influence ionisation energies.. •Predict the number of electrons in each shell as well as the element’s group, using successive ionisation energies.. Key Words:. Electrons, first ionisation energy, successive ionisation energies, electron shielding. . Unit 5. Electrons. Rutherford described the dense center of the atom called the nucleus.. But the Electrons spin around the outside of that nucleus.. Provide the chemical properties of the atoms.. Responsible for color and reactivity.. 1. Recap. When a current-carrying . semiconductor or metal. is kept in a magnetic field, the charge carriers of the . semiconductor. experience a force in a direction perpendicular to both the magnetic field and the current. At equilibrium, a voltage appears at the . The X-ray photon is a member of the electromagnetic family that includes . light. of all types, . radio waves. , . radar. and . television signals. , and . gamma rays. . Like many important scientific breakthroughs, the discovery of .