Periodic+Table

__**Directions:**__ a) list and define all vocabulary from the chapter Periods: horizontal row of elements. Groups: vertical columns of elements on the periodic table. Metals: elements that posses similar properties, such as aluminum, gallium, and a few others also is can conduct heat, it has ductility, electricity, finally loose electrons. Nonmetals: elements possesing the opposite characteristics of metals. gaseous state. noble gases, halogens are non-metals. noble gases are low reactive, halogens form diatomic molecules. Metalloids: found between metals and non metals. Atomic Radius: the size of the atoms surrounding the nucleus. Mole: a SI unit of measurement for one whole element. Atoms: the basic make up of every thing. Molar mass: Molar mass also known as M is the mass of a single element. b) type at least 4 sample problems with step-by-step directions of how to solve the problem; list the correct answers (if your chapter doesn't have math, there are still problems and concepts we learned.) (.7217 x 84.91) + (.2783 x 86.91)= 85.46 amu- you take the two percents of each isotope and move it two decimal places to the left then times it by the its atomic mass. after that you add both of the answers together to get the average. this is figuring out the average mass of two naturally occurring isotopes. also a lot of this chapter was remembering elements. c) link at least 3 websites for additional resources to help with studying http://www.webelements.com/ http://preparatorychemistry.com/Bishop_Molar_mass_conversion_factors_frames.htm http://chemistry.about.com/library/blperiodictable.htm d) develop your own LEQ questions for the section - what did you think were the key points we learned? How do you think periodic table trends help you to find atomic properties? How are elements measured? e) Once your page is done, visit 4 other chapters and answer their LEQ's. (This can be done on a separate piece of paper.)