Chemistry Solved_Part_13

Chemistry Solved_Part_13 - Laboratory Activity 7 Week 7...

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©2010 Digital Interactive Video Education Week 7 38 Laboratory Activity 7 Periodic Patterns Introduction When studying the Periodic Table, many patterns emerge, and one is the pattern of atomic radii. Moving from left to right across a period or series, the increase in opposing charges causes the atomic radii to shrink. Conversely, moving down any group or column, the atomic radii increases as more energy levels are added. In Laboratory Activ- ity 7, you will use the predictable periodic patterns of atomic radii to answer the following question: Can periodic patterns be used to predict atomic radii? Hypothesis (refer to your textbook and introduction to form a hypothesis) Methods Equipment: Periodic Table, this workbook Chemicals: None Procedure: Graph this data on the following page. Atomic radii are in picometers (10 -12 m). Atomic numbers are in order from 1 to 36. Refer to the video lab for further instructions. Atomic radii obtained from www. webelements.com
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Chemistry Solved_Part_13 - Laboratory Activity 7 Week 7...

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