<p>i put magnet..</p>
<p>iron fillings is metallic= magnetic
sand= sio2 which is a network... magnetic too?
KI not magnetic?</p>
<p>I don't think sand is magnetic..<br>
also I don't think you can separate all 3 by one method.. I thought about it and kept getting only 1 from the the other 2.</p>
<p>well probably got it wrong..</p>
<p>how many c/e's did you guys get</p>
<p>you only need to separate the salt</p>
<p>let's talk about some other questions..
were there 2 answers which had pH of 2?
Also what was the answer to the question with adding copper to different molarity of NO3(not sure) and getting nothing and brown gas.
I think I put E (different Molarity)..</p>
<p>also I noticed when filling the TF blank...</p>
<p>on second half of TF
the first part of the TF, I had all T except 1...</p>
<p>i put the same answer Dream. because it was suppose to be based solely on observ..</p>
<p>can anybody think of any new questions..? I can't</p>
<p>I had 4 T-T-CE...one of which was the ideal gas one</p>
<p>what about the nh4 question - it was something about it</p>
<p>i would post more questions if we were allowed to discuss it.
When are we allowed?</p>
<p>solid and conducts ??</p>
<p>carbon???</p>
<p>Can't you just add water to the mixture (which wouldn't dissolve the iron and sand) and then filter and evaporate the water? Or is that not w/e the water ______ choice meant?</p>
<p>i thought you were just separating the salt.. why not the magnet</p>
<p>Was the one with the total gas pressure 4 atm?</p>
<p>For the copper reacting with the nitrate solution at 3M and 15M, I also put E, that the reaction product changes with concentration although I am not sure if this is correct. Does anyone know the answer?</p>
<p>Also, for the KI separation, I'm pretty sure the answer was to dissolve with water, since the K+ and I- ions are removed.</p>
<p>the total gas pressure one was 4 atm.... I went through it using PV=nRT just to confirm...... same thing w/ the nitrate solution</p>
<p>same thing for iron filings, sand, etc.</p>
<p>what was the alkali metals less reactive one.... I put TF, but I think it might be FF.</p>
<p>i got like 2 maybe 3 TTCEs.......</p>
<p>the first half of those questions, I got like F for all the II's cept for 2..... idk how well I did, hopin for an 800, but i'll accept a 750+</p>
<p>Ionization energy decreases so more reactive as you go down the group.</p>
<p>Does anyone know the answer to the copper reacting with the nitrate solution at different concentrations?</p>
<p>pinky- why don't you ever see like RbCl and CsNO3 then..... u only see like NaCl, KNO3, LiNO3, and like HNO3..... never see RbNO3.....</p>
<p>idk, is it cause there isn't as much of it??? im not sure at all.</p>
<p>Graphite is able to conduct electricity due to the unpaired fourth electron in each carbon atom. This unpaired 4th electron forms delocalised planes above and below the planes of the carbon atoms. These electrons are free to move, so are able to conduct electricity. However, the electricity is only conducted within the plane of the layers.</p>
<p><a href="http://en.wikipedia.org/wiki/Graphite%5B/url%5D">http://en.wikipedia.org/wiki/Graphite</a></p>
<p>Graphite does conduct electricity.</p>
<p>For the one that contains both ionic and covalent bonds, was the answer NH4Cl or CaBr2 ?? (I put NH4Cl)</p>
<p>Also, is the one that shows greatest temperature change mercury? (it had the lowest specific heat).</p>