CH 110 Lecture Notes - Lecture 10: Copper(Ii) Oxide, Nonmetal, Chalcogen

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Chapter 7 part ii: periodic properties of the elements. Our periodic table is broadly grouped by: metals, nonmetals, and metalloids. The more an element exhibits the physical and chemical properties of metals the greater its metallic character. Metallic character decreases from left to right across a period. Most metallic elements exhibit the shiny luster we associate with metals. Metals are good conductor of heat and electricity. They are malleable (can be pounded into thin sheets) They are ductile (can be drawn into wires) All metals except for mercury are solid at room temperature. Metals tend to have low ionization energies and tend to form cations easily. Metals tend to be oxidized when they react (lose their electrons to become more positive) Compounds made up of a metal and a nonmetal are ionic substances. Ex. the reaction between copper metal and oxygen produces copper (ii) oxide. Those that dissolve in water react to form metal hydroxides.

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