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. Procedure:
In the beginning of the experiment, I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. Following this, I performed a number of steps on each of the four test tubes and recorded observations of the different substances including odor, color, reaction to heat, the effects on the red and blue litmus paper and HCI reactions.
Data Table 1: Solubility or Reaction
Substance NameColorOdorEffect of HeatCold H20Hot H20Litmus TestDilute HCIDilute NaOH MgSilvery, whiteMetallicIntense lightN/AmalleableRed to blueNoneNone CuReddishMetallicDull glowN/Amalleable, ductileBlue to reddissolvedissolve ZnPale grayMetallicN/A below 110*CN/AN/AnoneNoneNone MgOwhiteammoniaN/ACreates Mg(OH)2Creates Mg(OH)2Red to blueNoneNone CuCO3Dull whiteOdorlessNoneDissolvesDissolvesRed to bleachDissolveDissolve Cu(NO3)2Blue crystalsOdorlessNoneDissolveDissolveRed to blueDissolveDissolve NaClNone, crystalsOdorlessNoneDissolveDissolveTurns redDissolveDissolve
As most of the observations are noted on the table above, it is a fair assumption that all of these substances went through some sort of change 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 very little to no reaction to the tests. Also, regarding the boiling point and melting point of different substances; some had no reaction at all.
Did you observer any chemical changes in this experiment?
Yes, Litmus paper is an example of chemical solely and was effected by all the...