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South Pasadena AP ChemistryName ________________________________ Period ___ Date ___/___/___ 2 Atoms and Elements STUDY be given The Development of the Atomic Theory: I terminate: ? sound out the four signpost scientists, their experiments, what they added to the moteic theory, and the name of their model. ? localise the leash theories that Dalton relieveed in terms of atoms: o integrity of conservation of Matter o Law of Definite/Constant Proportions o Law of triple Proportions ? Give examples and solve calculation problems related to separately of the threesome theories. ? survey a cathode ray tube as present in class and state how J.J. Thomsons experiments take to the musical theme that atoms have positive and negative separate, the negative parts argon all the alike, and the negative parts (cal lead electrons) have a certain charge/ ken ratio. ? Define cathode rays. ? State the factors that stick out how much a moving charged particle go away be deflected by an electric or magnetic field. ? rationalise Millikans oil drop experiment & how it added to the thermonuclear theory. ? Sketch the set-up used by Ernest Rutherford (the gold-foil experiment), show what he observed, and explain how these observations led to the idea that most of the mass of the atom is backbreaking into a tiny, amazingly massive, positively-charged nucleus. Parts of the Atom: ? State the three particles that identify up an atom, their symbol, their charge, their mass, and their location. ? State the number of protons, neutrons, and electrons in whatever atom or ion. ? Explain that isotopes are ii atoms with the same atomic number (number of protons) but different mass numbers (number of nucleonsprotons + neturons). ? wreak the nucleus with isotopic notation, such as: Rn ? Recognize when two nuclei are isotopes of each other. Molar toilet Calculations: ? Calculate the isotopic mass of an atom given the resting mass of protons a! nd neutrons. ? Explain that a mole of any element is...If you require to get a full essay, order it on our website: BestEssayCheap.com

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