Classification Of Substances

SACE Stage 1 Chemistry – Experiment – Classification of veg marrows objective lens: To examine the physical properties of a crook of warmheartednesss and to classify them into groups rule: 1. exam for conductivity in its complete(a) state by having two electrodes in the substance that do not achieve and tally whether the light bulb turns on. 2. Testing to see the issuing of heat on the substance, the heat was supplied with the etna burner. We heated each substance for two minutes to see if a transfer occurred. 3. Then we checked if its state was changed and trialed whether it conducted electrical energy in its changed form. This was done in the same commission as testing its pure state. 4. Then we tested the substance to see if is fade out in urine. Simply having close to of the substance into a test tube and adding water and line up what happens next. 5. If it did dissolve we tested whether it conducte d electricity when in a outcome with water. 6. Then finally, we tested if it was disintegrable in dichloromethane. Results: Name | blueprint and State |Cond. Of pure substance |Effect of Heat | melt point |Cond. Of molten substance | solubility in water |Cond.

Of substance in water |solvability in CH2Cl2 | |Iodine |I2 unshakable |NO |YES sublimation |113°C |NO |YES |NO |YES | |Naphthalene |C10H8 unscathed |NO |YES semiliquid |80.26°C |NO |NO |N/A |YES | |Ethanol |C2H5OH Liquid |NO |YES Vaporises |N/A |NO |Already liquid |N/A |Doesn’t liquify | |Wax |CXHY straightforward |NO |YES Liquid |45°C |NO |NO |N/A |NO | |! vertebral column |SiO2 Solid |NO |NO CHANGE |1713°C |N/A |NO |N/A |NO | | thou nitrate |KNO3 Solid |NO |YES Liquid |338°C |YES |YES |YES |NO | |Zinc oxide |ZNO2 Solid |NO |NO / colour change |1975°C |N/A |YES |NO |NO | | randomness |S Solid |NO |YES Liquid |113°C |NO |NO |N/A |NO | |Sodium chloride |NaCl Solid |NO |YES Liquid |801°C |YES |YES |YES |NO | |Sugar |C12H22O11 Solid |NO |YES Liquid |146°C |NO |YES |NO |NO | |N.B.:...If you want to get a safe essay, order it on our website: OrderCustomPaper.com

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