Alkaine Earth Metal Lab

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Alkaline Earth Metal Lab Pre-Lab: The alkaline earth metals are found it period 2. The elements in group 2 are chemically active and are never found in nature alone. The elements in group 2 share common characteristics. As you go down in group 2 the metallic character increases. The metallic character is the tendency to donate electrons during chemical reaction. The more reactive of these elements react with water to form hydroxides and hydrogen gas. When the metallic character increases the tendency to form ions increases in the elements. As you go down in a group the solubility’s of the hydroxides formed by the elements of this group increase. The more active the metal the more basic it’s saturated hydroxide solution. The sulfate compounds of alkaline earth metals show decreasing solubilites as you go down a group. This characteristic is used as a means of separating and identifying metallic ions in a group. Carbonates are pretty insoluble. You will observe in this experiment some of the characteristics of the alkaline earth metals discussed here and will write balanced equations for all reactions. Purpose: Investigate some reactions of some group 2 elements and gain some insights into the properties of these alkaline earth metals. Equipment: (pg 131) Materials: (p 132) Safety: • Avoid skill and contact with your skin • Tie back long hair • Wear safety goggles Procedure: (record all data in the observations and data section) Part A 1. Pour 5 ml of distilled water into a clean and dry test tube and put the test tube into on the test tube rack. Add a calcium turning to the water in the tube. Put a clean and dry test tube over the reactant tube, to collect the gas being released. Hold the upside down tube with the holder. 2. Test for hydrogen gas by inserting a burning wood splint in the upper part of the inverted

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