Gorospe, Jheremy Alden B.
The experiment Chemical Periodicity was demonstrated by using different samples of Group IA, Group IIA and Group IVA elements. We placed each of the samples in each test tubes and the physical state, color, and appearance was identified. We determined the solubility of the elements by using distilled water. We used red and blue litmus paper for the Group IIA Metal Oxides. But for the Group IA and Group IIA elements and Group IVA elements, we didn’t use litmus paper. Then, we wrote a balanced equation to show the reaction between Metal Oxides and water. __________________________________________________________________________ INTRODUCTION
Chemical periodicity is defined as the similarities of chemical elements that are close to each other in the periodic table. When elements are arranged in order of increasing atomic number, their physical and chemical properties recur periodically. This periodicity stems from the valence electronic configurations of the elements. This arrangement of elements in the order of increasing atomic number with the elements having similar properties placed in vertical columns is known as periodic table. ____________________________________________________________________________________
MATERIALS AND METHODS
For Group IA and IIA Elements
Place a small amount of each sample of Lithium, Sodium, Potassium, Magnesium, Calcium and Barium in different test tubes. Identify the physical state, color and appearance of each. Test the solubility in 10mL of water. For Group IVA Elements
Place a small amount of each sample of C, Sn, Si and Pb in different test tubes. Identify the physical state, color and appearance of each element. For Group IIA Metal Oxides
Place a small amount of MgO and CaO in different test tubes. Add 10mL water to each sample and test each sample with litmus paper. Write...
References: Laboratory Manual
1. Brown, T.L., Eugene Le May, Jr., and Bruce E. Bursten., 1997. Chemistry: The Central Science. 7th Edition. New Jersey: Prentice-Hall International
2. Zayas, Clovia Isabel S. and Ramonesa R. Ricardo., 1994. Laboratory Manual for General Chemistry. Manila: DLSU Press
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