Trends in the periodic table. This experiment, through calculating the density of four samples and determining the solubility of the alkaline earth metal salts, investigated periodic trends in density and solubility.

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Trends in the periodic table

This experiment, through calculating the density of four samples and determining the solubility of the alkaline earth metal salts, investigated periodic trends in density and solubility. For the density experiment, each sample was weighed accurately with a balance and the weight was recorded in a table. The volume of each sample was then determined by dropping the sample in a known volume of water. The new volume was then subtracted by the initial volume and the density of each sample was then calculated by the density formula. The density which was recorded was very near to the correct density of the samples but a slight percentage error was obtained and was recorded in a table.

The density of germanium was determined by drawing a graph of the four samples and finding the density of germanium by interpolation. In the solubility experiment, about 1cm3 of 0.1 M solutions of the nitrate salts magnesium, calcium, strontium and barium was placed into four test tubes. One drop of 1 M H2SO4 was added to each tube and the observations of each were recorded on a result page. The experiment was then repeated by adding 1 M