Physical and Chemical Properties Essay

PurposeThe somatogenic and Chemical Properties lab provides the prospect to investigate the corporeal and chemic properties of pure chemical substances and analyze the investigate results.ProcedureIn the beginning of the experimentation, I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later enforce. Following this, I performed a number of steps on each of the four screen tubes and recorded observations of the different substances including odor, color, reaction to heat, the effects on the red and lively litmus cover and HCI reactions.ObservationsAs most of the observations are noted on the table above, it is a fair assumption that all of these substances went through rough sort of alteration whether it was a chemical or physical change except for Zinc. This may be because I had dropped my Zinc sample and had a tough time retrieving the contents but never the less it had truly little to no reactio n to the tests. Also, regarding the boiling bill and melt down point of different substances some had no reaction at all.QuestionsDid you observer both chemical changes in this experiment?Yes, Litmus paper is an manakin of chemical solely and was effected by all the substances except for Zn.What licence did you use to decide that something was a chemical change?Chemical combines of the litmus paper reacted with the chemical compounds of the substance tested to create a new compound resulting in a change of color of the litmus paper. No evidence was visibly seen when MgO Mg(OH)2.Give at least two examples of chemical changes you observed. whiz example was the reaction on the litmus paper and the second example was Magnesium oxides change into Magnesium hydroxide when introduced to water. associate the spare-time activity properties of sodium metal as physical or chemical notes metallic color Physical Turns gray in air Physical Melts at 98oC Physical Reacts explosively with ch lorine gasChemicalClassify the following changes as physical or chemical Water freezes at 0oCPhysical Baking restorative 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 learn that dissolving table brininess is a physical change?By boiling the water and using a distillation process to elicit the pure salt. Once all water is retracted, you can 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 qualitative 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 within the directional 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.