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Zinc Zn Lead Pb Copper Cu Aluminum Al Carbon C Talc (1 ) Mg 3 Si 4 O 10

Hardness Lab Hypothesis: Look at the minerals and metals and observe their positions on the periodic table and make a list from most to least hard Procedure: Test the hardness by using scratch tests and record your data in a data table Analysis:

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Zinc Zn Lead Pb Copper Cu Aluminum Al Carbon C Talc (1 ) Mg 3 Si 4 O 10

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  1. Hardness Lab Hypothesis: Look at the minerals and metals and observe their positions on the periodic table and make a list from most to least hard Procedure: Test the hardness by using scratch tests and record your data in a data table Analysis: Based on your data, make a new list from most to least hard Conclusion: How close was your hypothesis? Is there a pattern on the periodic table that could tell you hardness? Where do you think Calcium would fit on your scale? What about Tungsten? Zinc Zn Lead Pb Copper Cu Aluminum Al Carbon C Talc (1) Mg3Si4O10 Fluorite(4) CaF2 Quartz (7) SiO2 Obsidian (51) SiO2 + MgO + Fe3O4 Pyrite (22) FeS2

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