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Astronomical Observational Techniques and Instrumentation
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Compounds and Mixtures. The Periodic Table Contains 118 known elements. periods groups It´s organised in rows ( periods ) and columns ( groups ). periods
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Chem 1151: Ch. 2 Atoms and Molecules. Structure of the Atom Mass (g)Mass (u) Proton (p+)1.67 x 10 -24 1 Neutron (n)1.67 x 10 -24 1 Electron (e-)9.07 x
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(C.5) (A) explain the use of chemical and physical properties in the historical development of the Periodic Table; (C.5)(B) use the Periodic Table to identify
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Unit 3 – Chemical Periodicity. Elements & Atoms Element-a pure substance that has one kind of atom The periodic table lists all the different elements
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Unit 4
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Navigating the Periodic Table 1. What is the Periodic Table? An organization of Earth's elements arranged according to atomic number, the number of protons
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is an arrangement of the elements according to their properties. It enables chemists to classify the elements so that it is possible to identify patterns
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Lesson 3 Classifying Matter Classifying Matter Anything in black letters = write it in your notes (‘knowts’)
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