Physical and Chemical Properties Essay

PurposeThe Physical and chemical Properties lab provides the opportunity to inquire the corporeal and chemical substance substance properties of pure chemical substances and consider the experiment results.ProcedureIn the beginning of the experiment, I filled both 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. hobby this, I performed a number of steps on each of the quaternity test tubes and recorded observations of the different substances including odor, color, reaction to heat, the effects on the loss and blue litmus test paper and HCI reactions.ObservationsAs most of the observations argon storied on the table above, it is a f aura assumption that all of these substances went done some sort of assortment whether it was a chemical or physical change except for Zinc. This may be because I had dropped my Zinc test and had a tough time retrieving the contents but never the slight it had very little to no reaction to the tests. Also, regarding the boiling point and melt down point of different substances some had no reaction at all.QuestionsDid you beholder any chemical changes in this experiment?Yes, Litmus paper is an shell of chemical solely and was effected by all the substances except for Zn.What secern did you use to decide that something was a chemical change? chemical compounds of the litmus paper reacted with the chemical compounds of the substance tested to create a brisk compound resulting in a change of color of the litmus paper. No evidence was visibly leaven when MgO Mg(OH)2.Give at least two examples of chemical changes you observed.One example was the reaction on the litmus paper and the blurb example was Magnesium oxides change into Magnesium hydroxide when introduced to water. furcate the following properties of sodium metal as physical or chemical Silver metallic color Physical Turns gray in air Physical Melts at 98oC Physical Reacts explosively with chlorine gas chemicalClassify the following changes as physical or chemical water freezes at 0oCPhysical bake soda when combined with vinegar produces bubblesChemical Mothballs gradually disappear at room temperaturePhysical Ice cubes in a freezer get smaller with timePhysical Baking soda loses mass as it is heatedPhysical Tarnishing of silver ChemicalF. How would you show that dissolving table salt is a physical change?By boiling the water and using a distillation mould to extract the pure salt. Once all water is retracted, you evoke see that the salt never went through a chemical change.ConclusionsBy conducting this lab, it can be seen that physical and chemical changes are an everyday occurrence among many different substances. Using prepared lab techniques, we can make soft observations on the appearance, smell, and reactions of different substances. The Physical and Chemical Properties lab provides the opportunity to investigate the physical and chemical properties of pure chemical substances and analyze the experiment results at heart the guiding principles and techniques. By doing so, the following can be learned though the experiment Chemical properties describe the tendencies of a substance to undergo chemical change and physical properties commonly used to characterize pure substances are color, odor, hardness, density, melting point, boiling point, and solubility in various solvents.