PPT-Ch5 Modern Atomic Theory

Mrs Medina 1 Why do metals glow when heated 2 Models of the Atom A model should explain not just what the material is made of composition but also how it is going to behave changes Ruthefords. At the start of WWII in 1939 the atomic bomb had not yet been invented. However, scientists discovered about that time that a powerful explosion might be possible by splitting an atom. This type of bomb could destroy large cities in a single blast and would change warfare forever!. Lab no. 6. In . analytical chemistry. , . Atomic absorption spectroscopy. (AAS). . is a technique for determining the concentration of a particular metal . element. . (e.g. Fe, Cu, Al, Pb, Ca, Zn). 2:. Atomic Theory. and Structure. (. c. 400 B.C.. ) Democritus proposed that “. atomos. ” are . indivisible. .. Atom. : . smallest particle . of matter that . retains its properties. .. Early Models of the Atom. by . Tiffany, Katelyn, Veronica, . Kole. John Dalton (1766-1844). John Dalton was born into a Quaker Family.. Born: September 6. th. , 1766 in Cumberland, England. He was an English . Meteorologist and then. Atomic Theory Timeline . Scientific knowledge builds on past research and experimentation.. Democritus. 400 B.C.. Information. Atomic Model. Analogy. Democritus, a philosopher in ancient Greece,. . began the search for a description. Chapter 3. Types of Models – Why do we use models?. Physical Model vs. Conceptual Model. Physical model. is a representation of a very large or small object shown at a convenient scale. . The atom: from philosophy to scientific theory . 400 BC . – . Democritus. came up with the idea of the . ________. Nature’s . basic particle. ______________. His ideas were not useful in explaining chemical behavior because . How and why has the Atomic Theory changed over time? . How can we describe the molecular motion of the states of matter? . Objectives. Students will explain that atoms are the smallest unit of an element and are composed of subatomic particles.. The Modern Atomic Theory: A Closer Look at the Electron Blocks in The Periodic Table = s block = d block = p block = f block 1 2 3 4 5 6 7 Row # Where is the Electron? In the quantum mechanical model, the electrons are found How and why has the Atomic Theory changed over time? . How can we describe the molecular motion of the states of matter? . Objectives. Students will explain that atoms are the smallest unit of an element and are composed of subatomic particles.. ukinfo@csagroup.org Project This certificate and its schedulesreproduced in its entire 1 2 Equipment intendedCertificate 4 EquipmentApplicantAddress 8201coD Th 9 Th 10 Io 11 ( II 2 I 298G J LAWRENCE K W SHEPHERD AND G M E MAYOAL3AL4 A-L1O A-L5A-L6A-L7 A-Mi A-M4 and A-PA-P1 A-P2A-P3 Flor 1955 1965a Lawrence et a 1981 So far recombinationbetween genes within these groups has not bee Science is based off of observations.. A Scientific Law is a summary of what is seen in observations. . A Scientific Theory is an explanation of why these observations are occurring.. Both laws and theories are tested by using them to predict what would happen in certain situations.. In your notes…. Draw a model of an atom that best represents each component of that atom.. Foundations of Atomic Theory. Particle Theory of Matter. Democritus in 400 B.C.. Stated that nature’s basic particle was the atom (“indivisible” in Greek). .