periodic table.....aims

 

 

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aim 1.....what are some physical properties of elements?

aim 2.....what are some chemical properties of elements?

aim 3.....what are the trends of the periodic table?

honors

 

cross-word puzzle

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skills students should be able to do

real-world connection


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Words: behaves, crystal, density, exist, identifies, increasing, location, metalloids, notations, physical, properties, similar, succession, sum, trends

 

The placement or _________ of elements on the Periodic Table gives an indication of physical and chemical properties of that element. The elements on the Periodic Table are arranged in order of __________ atomic number. The number of protons in an atom (atomic number) __________  the element. The ____ of the protons and neutrons in an atom (mass number) identifies an isotope. Common ________ that represent isotopes include: 14 C, carbon-14, C-14. Elements can be classified by their properties and located on the Periodic Table as metals, nonmetals, __________ (B, Si, Ge, As, Sb, Te, At), and noble gases. Elements can be differentiated by their _________ properties. Physical properties of substances, such as ________, conductivity, malleability, solubility, and hardness, differ among elements. Elements can be differentiated by chemical _________. Chemical properties describe how an element ________ during a chemical reaction. Some elements ______ in two or more forms in the same phase. These forms differ in their molecular or ________ structure, and hence in their properties. For Groups 1, 2, and 13-18 on the Periodic Table, elements within the same group have the same number of valence electrons (helium is an exception) and therefore ________ chemical properties. The succession of elements within the same group demonstrates characteristic _______: differences in atomic radius, ionic radius, electronegativity, first ionization energy, metallic/nonmetallic properties. The ____________ of elements across the same period demonstrates characteristic trends: differences in atomic radius, ionic radius, electronegativity, first ionization energy, metallic/nonmetallic properties.

 

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