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Friday September 18, 2009. Essential Questions How would scientists determine the identity of an unknown metal? SC-H-STM-S-9 Students will investigate.

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Presentation on theme: "Friday September 18, 2009. Essential Questions How would scientists determine the identity of an unknown metal? SC-H-STM-S-9 Students will investigate."— Presentation transcript:

1 Friday September 18, 2009

2 Essential Questions How would scientists determine the identity of an unknown metal? SC-H-STM-S-9 Students will investigate the role of intermolecular or intramolecular interactions on the physical properties (solubility, density, polarity, boiling/melting points) of compounds

3 Homework 1.Vocab List E…due Monday, Sept 21 Vocab Quiz E… 2.Density of Irregular Solids and Liquids due Today

4 Lab Assessment Identification of an unknown metal using density.

5 Purpose: identify the following metal shot using density Procedure: use the lab techniques that you learned this week to find the density of the metal shot and compare that density to a set of known densities. Be sure to record the procedure that you used. Hypothesis: predict what you think the metal shot is made of

6 Sample Densities of various Metals MetalDensity (g/cm 3 ) Aluminum2.70 Bismuth9.78 Chromium7.19 Copper8.94 Iron7.87 Lead11.34 Silver10.49 Steel8.05 Titanium4.51

7 Assessment (due on Tuesday) Students will submit a written laboratory report in order to support or reject their stated hypothesis as to the identity of the metal shot.

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