<p>I am good at chem but the random descriptive stuff always kills me. I think we should make a list of various things to know, so off the top of my head:</p>
<p>Nitrous Oxide, N2O = laughing gas
SiO2 = Glass
AgBr and AgI = photographs
F = Floride protects teeth
Cl = Bleech</p>
<p>Alloys = lower melting point and harder than its components
Bronze = Copper + Tin (Cu + Sn)
Brass = Copper + Zinc (Cu + Zn)
Steel = Carbon + Iron (C + Fe)</p>
<p>flame colors</p>
<p>Ya are flame colors and the different colors of Cu or Iron oxidation states on there? I haven't found any in my practice tests, however soubility rules have appeared a bunch.</p>
<p>N2 - burns blue - the only one I know
Is there a short cut to learning the solubility rules?
All precipitates are formed by double displacement, right?
There is so much stuff on that - can anyone sum it up?</p>
<p>Lab drawings and set ups always gets me..</p>
<p>must you memorize solubility rules? I memorized ox-redox charts. Here goes:
potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead, copper, mercury, silver, mercury, gold. I forgot the difference between the 2 mercuries.
roy:same, especially because i havent done any meaningful labs at school.
flame colors: I only know oxygen burns blue.</p>
<p>pressure directly proportional to solubility in the case of gases.
temp inversely proportional to solubility in the case of gases.
I think the 3rd,4th,5th, elements of group one are red, yellow, blue, for flame color. Not sure though.</p>
<p>Memorize solubility rules! Must!</p>
<p>Just know general trends.</p>
<p>IE.. all Sodiums are soluble, most chlorides are soluble except for PbCl, HgCl, etc.</p>
<p>Make up little stories in your head or acronyms that help you. It won't take you longer then 10 minutes to memorize if you try to make up a system for memorizing them.</p>
<p>My Aunt Zelda Irritates Tim</p>
<p>Magnesium, Aluminum, Zinc, Iron, and Tin all are metals that react in warm water and form salts when reacted with a diluted acid.</p>
<p>but doesn't a metal like Ca also react with an acid like HCl to form H2 + CaCl2?</p>
<p>"but doesn't a metal like Ca also react with an acid like HCl to form H2 + CaCl2?"</p>
<p>But it also reacts with the water in the acid to form Ca(OH)2 + H2</p>
<p>I don't think the sat ii chem will be hard at all. the CB doesn't even allow the use of calculators. In other words, all the numbers will work out evenly if you do the calculations correctly. Its just a matter of knowing the finite things like flame tests, etc. in order to score a nice 750 or better</p>
<p>There are a few times when you actually have to divide. Albeit very few. Oh and practice those stupid T/F/CE ones.</p>
<p>madskier, the presence or absence of a calculator really does not make much of a difference. If calculators were allowed, you would simply be using a calculator to do problems instead of by hand. I could see only 1 new type of problem, the one where you determine the concentrations of different isotopes in an element, using system of equations.</p>
<p>OMG I HATE T/F/CE Questions, theyre so annoying... o yea flame colors (same as flame tests??): green-copper, red- lithium, purple/lilac- potassium, orange-sodium i think...</p>
<p>So its confirmed that both flame tests and the colors of Cu 2+ or Cu will be on there? I agree this test should be very easy, but the descriptive stuff is the difference between a 750 and a 800</p>
<p>Can someone please explain numbers 59 and 60 in the Real SAT II book?</p>
<p>tbry23m whats a good book to study for descriptive chem. I have barrons but it is a little dizzying to study all those flame tests. There are some really obscure questions on the test. Like, did you know petroleum is not used in making cellulose? </p>
<p>Is the test in real SAT IIs reflective of the real thing, both in terms of category of questions and difficulty? The test seemed harder than both barrons and kaplans but i got a 770 on it, yet I feel like that was due to lucky guessing. It also tested (i think) literally no nuclear chemistry, which, for me, is the easiest category, little stoichometry, and tested balancing redox equations and acidbase frequently.</p>
<p>Bump, please explain questions 59 and 60 in real SAT II book.</p>
<p>ashernm, the CB allows the use of a calculator on the AP free response because of its relatively high level of difficulty. I was simply making a correlation between the non-existence of a calculator and simpler numbers that appear on the chem sat ii versus the AP chemistry test. I need to study...good luck everyone</p>