092207 WS1 Notes.doc

092207 WS1 Notes.doc - Chemistry 121 Worksheet 1 Notes 1...

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Chemistry 121 Oregon State University Worksheet 1 Notes Dr. Richard L Nafshun 1. Sketch a cartoon of the PTE (Periodic Table of the Elements). Identify the metal and non-metal regions with labels and a "staircase." Comment on the metalloids. Metalloids are “on” the staircase. Metalloids are elements which have properties of metals and non-metals. 2. List six metals by name and symbol. How many protons and electrons do these metals have? Name of Metal Symbol p e - lithium Li 3 3 copper Cu 29 29 lead Pb 82 82 silver Ag 47 47 aluminum Al 13 13 magnesium Mg 12 12 and many others. These are located to the left of the staircase. 3. List six non-metals by name and symbol. How many protons and electrons do these non-metals have? Name of Non-Metal Symbol p e - helium He 2 2 radon Rn 86 86
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chlorine Cl 17 17 oxygen O 8 8 nitrogen N 7 7 carbon C 6 6 and many others. These are located to the right of the staircase. 4. How many protons, neutrons, and electrons are present in I-131?
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