Physical and Chemical Properties Essay

PurposeThe natural and chemic Properties science testing groundoratory provides the opportunity to investigate the physiological and chemic substance properties of pure chemical substance substances and psychoanalyse the investigate results.ProcedureIn the kickoff of the experiment, I filled two 24-well plates fractional way with the given chemicals and sucked up these chemicals into their denominate pipets for later utilisation. Following this, I performed a number of steps on for each one of the four test tubes and recorded observations of the polar substances including odor, color, reaction to heat, the effects on the inflamed and blue litmus test paper and HCI reactions.ObservationsAs most of the observations are noted on the tabulate above, it is a fair precondition that all of these substances went through some strain of miscellanea whether it was a chemical or physical miscellanea except for Zinc. This whitethorn be because I had dropped my Zinc try and had a tough time retrieving the circumscribe but neer the less it had truly little to no reaction to the tests. Also, regarding the turn state point and melting point of divergent substances some had no reaction at all.QuestionsDid you observer any chemical changes in this experiment?Yes, Litmus paper is an utilisation of chemical solely and was effected by all the substances except for Zn.What evidence did you use to decide that something was a chemical change? chemic compounds 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. unmatchable example was the reaction on the litmus paper and the second example was atomic number 12 oxides change into Magnesium hydroxide when introduced to urine.Classify the followers properties of sodium admixture as physical or chem ical Silver metallic color strong-arm Turns gray in air Physical Melts at 98oC Physical Reacts explosively with chlorine gasChemicalClassify the undermentioned changes as physical or chemical Water freezes at 0oCPhysical baking hot soda when combined with vinegar produces bubblesChemical Mothballs gradually disappear at populate temperaturePhysical Ice cubes in a freezer get smaller with timePhysical Baking soda loses destiny as it is heatedPhysical Tarnishing of funds ChemicalF. How would you show that dissolving table salt is a physical change?By change state the water and victimisation a distillation process to invite out 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 some(prenominal) different substances. Using prepared lab techniques, we can make qualitative observations on the appearance, smel l, 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 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 stipulate pure substances are color, odor, hardness, density, melting point, boiling point, and solubility in various solvents.