NGCLSV+-+Journal


 * Caption || Picture || Analysis ||
 * Cu - initially (before the experiment) || [[image:Photo_631.jpg width="456" height="368"]] || at this part of the experiment impurity was caused by the copper oxide on the cooper. it is the black colored stuff on the surface of the copper piece. ||
 * Adding Nitric Acid (HNO3) to Copper (Cu) || [[image:Photo_635.jpg width="460" height="338"]] ||  ||
 * Copper(II) Nitrade (Cu (NO3)2) -> after adding Nitric Acid (HNO3) || [[image:Photo_636.jpg width="454" height="317"]] || Left overs form the reaction before could influence the new reaction. ||
 * Adding Sodiumhydroxide (NaOH) to Copper(II) Nitrade (Cu (NO3)2) and water (H2O) || [[image:Photo_638.jpg width="454" height="343"]] || in this case atoms could have been added by dust and the pipette and other stuff we used. ||
 * Heating the Copperhyroxide (Cu(OH)2) || media type="file" key="Movie 21.mov" width="300" height="300" || By using the stiring rod we first added unknown atoms and then took some of the copper atoms out because they were stuck to the rod. ||
 * Copper(II) oxide after the heating process, the higher density of the copper(II) oxide, allows it to sink at the bottom of the beaker, while the water is on the top. || [[image:Photo_641.jpg width="448" height="343"]] || While decanting we possibly lost some of the copper atoms, because we could not really make sure that all of the copper stays in side the beaker as we wanted it to. ||
 * Salt water decanted from the beaker. || [[image:Photo_on_2011-04-20_at_13.01.jpg width="448" height="336"]] ||  ||
 * After adding hydrochloride into the beaker with copper(II) oxide.ing || [[image:Photo_on_2011-04-20_at_13.29.jpg width="448" height="336"]] ||  ||
 * Adding Na3Po4 into beaker || [[image:Photo_on_2011-04-22_at_13.06.jpg width="448" height="336"]] ||  ||
 * Boiling beaker with bunsen burner || [[image:Photo_on_2011-04-22_at_13.22_#2.jpg width="448" height="336"]] || While decanting some of the salt water, we probably lost a couple copper atoms. ||
 * Pour through filter paper || [[image:Photo_on_2011-04-22_at_13.27.jpg width="448" height="336"]] || When we put the solution in the filter, a lot of the copper atoms were left in the beaker, that is why we poured new water on top so the copper would leave the beaker together with the water into the filter. This worked for the most of the copper but there was still copper atoms left in the beaker. That is were we lost a lot of the copper atoms. ||
 * decanted || [[image:Photo_on_2011-04-26_at_13.19.jpg width="448" height="336"]] ||  ||