(General Chemistry) : Kimia Umum (TKK 134)
(General Chemistry) : Kimia Umum (TKK 134)
(General Chemistry) : Kimia Umum (TKK 134)
Evaluation/Exams
Credit : 2 credits/SKS Evaluations: Tugas untuk Section Dr. Istadi: 10% Ujian (UTS) untuk Section Dr. Istadi: 40%
Ujian (UAS) untuk Section Aprilina P., ST, MT.: 40% Tugas untuk Section Aprilina P., ST, MT.: 10% References/Textbook Utama: Martin S. Silberberg, (2006), Chemistry: The Molecular Nature of Matter and Change, 4th Edition, The McGraw-Hill Companies, Inc., ISBN 0-07-111658-3 Online/Web Course: http://tekim.undip.ac.id/staf/istadi
Compounds: a type of matter can be decomposed into two or more different elements that are chemically bound together ==> ammonia, water
Two or more elements combined in fixed parts by mass
Matter
Is it uniform throughout ?
No Heterogeneous Mixture
yes Homogeneous
No
Can it be decomposed into other substances by chemical processes?
Pure Substances
No
yes
Element
Compounds
R. Millikan (1909): was able to successfully measure the charge on a single electron (the "Millikan oil drop experiment")
This value was determined to be -1.602E-19 coulombs. Thus, the mass of a single electron was determined to be:
mass charge charge = 5.686E - 12 kg / C 1.602E - 19 C = 9.109E - 31 kg = 9.109E - 28 g Mass of Electron =
Experiments of Millikan
Experiment of E. Rutherford
Chadwick concluded that this mysterious radiation from the (Po-Be) source cannot be interpreted by assuming it to be a gamma ray. He finally concluded that all were able to be understood without any contradiction by assuming that the mysterious radiation is electrically neutral particles with almost the same mass as a proton. This is the confirmation of the existence of the "neutral proton" predicted by Rutherford. Chadwick named this particle "neutron" (1932).
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SELAMAT BELAJAR