periodic table.....aims
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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?
cross-word puzzle
skills students should be able to do
explain the placement of an unknown element in the Periodic Table based on its properties
interpret and write isotopic notation
classify elements as metals, nonmetals, metalloids, or noble gases by their properties
describe the states of the elements at STP
determine the group of an element, given the chemical formula of a compound, e.g., XCl or XCl2
compare and contrast properties of elements within a group or a period for Groups 1, 2, 13-18 on the Periodic Table
similar properties and uses for elements in the same family
characteristics of a class of elements are similar
uses of different elements, e.g., use of semiconductors in solid state electronics and computer technology
alloys as superconductors
metallurgy
recovery of metals
different properties for each allotrope:
oxygen gas vs. ozone
coal vs. graphite vs. diamond vs. buckminsterfullerene
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.