Le Chatelier’s principle predicts that an addition of heat to an endothermic reaction (heat is a “reactant”) will shift the reaction to the right (product side). 5: Properties of Hydrates (Experiment) It is generally possible to remove the water of hydration by heating the hydrate.The following is a brief summary of the Nomenclature rules for each of these types of compounds. Before beginning the exercise you should carefully read all the sections of your text (or notes) on the names and formulas of ionic compounds, simple covalent compounds, and acids. 4: Inorganic Nomenclature (Experiment) In this exercise you will practice naming and writing chemical formulas for many inorganic compounds, both ionic and molecular.Chromatography is one of the first tools used in such situations. For example, an environmental chemist investigating samples of polluted ground water will want to know which toxic ions might be present in a sample. The ability to qualitatively identify the substances found in a sample can be critical. 3: Paper Chromatography- Separation and Identification of Five Metal Cations (Experiment) Most chemists and many other scientists must routinely separate mixtures and identify their components.
In general, since different substances have unique densities, determining the density of an unknown substance can help identify it. Other physical properties include melting point and solubility. Physical properties are those characteristics of a substance that can be determined without changing the chemical identity of the substance.
If there is a direct, linear relationship between two variable parameters, the data may be fitted to the equation of line with the familiar form y=mx+b through a technique known as linear regression. 1: Using Excel for Graphical Analysis of Data (Experiment) An important technique in graphical analysis is the transformation of experimental data to produce a straight line.
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