<p>hey, if i got 60/75 on the MC but can barely do like 1/4 of the FR what score will i probably get? thanks so much =)</p>
<p>mesquite_girl…
here are some key ones:
Ba: green
Na: Yellow
Cu: blue-green
K: lavender/purple
Sr: red
Li: red
Ca: orange…
hope that helps.!</p>
<p>thanks anamai! that does help a ton!</p>
<p>How do you know when to write an equation in ionic form and when to just write it in regular form, with compounds?</p>
<p>Is it just all aqueous solutions are written as ions?</p>
<p>oh, and mesquite_girl…yes barron’s is harder than the real exam…or so i’m told…i actually used princeton review…which is not as hard…but still harder i think…</p>
<p>On the FRQ reactions, everything should be in ionic if possible.</p>
<p>Terrence, I was looking for one with buffers in it haha.
Like the one you mentioned before, about which one would produce a buffered solution or something?</p>
<p>barrons had a ton of mistakes - i may write their editor a letter. So is everyone gonna stay up late to study or crash and get sleep? I’m leaning towards the second option</p>
<p>Sleeping @ 10 o clock, furiously studying until.</p>
<p>I just hope acid/base/buffers aren’t too prominent. And that the reactions they ask about are somewhat reasonable.</p>
<p>I agree. When i look at the FRQ I know the basic concept but sometimes (specially titrations) i have a hard time knowing where to start.</p>
<p>UGH - i seem to be making SO Many stupid mistakes in these practice tests. While looking at the solutions, I found that if I reduced them my grade would go up by a whole point…</p>
<p>Can somebody explain to me what a buffer solution consists of?</p>
<p>I think its a combination of strong acid + strong base and weak acid + weak base</p>
<p>But what about conjugate acids and bases?</p>
<p>weak acid + its salt</p>
<p>strong acid won’t give you a buffer</p>
<p>O ok I can’t find an actual question. But what you would do if they gave you the pH. You would choose the answer where the pKa (which you would have to approximate since it’s non calc) is closest to the pH.</p>
<p>Calculation crash course:
For example if I wanted to know the pKa of something where the Ka = 1.8 x10 ^-5</p>
<p>I first look at the 5. 1.0 x 10^-5 will give me a pH of 5 right? But 1.8 will give me something somewhere between 5 and 6.</p>
<p>Everyone should be in bed lol… Really guys don’t stay up past 12.</p>
<p>Wow…ha how much have y’all studied/prepared for this test?!</p>
<p>Covalent bonds.</p>
<p>I need to know the idfference between intermolecular covalent bonds and intramolecular.</p>
<p>normally the exponent is the pKa.</p>
<p>How important are significant digits on the AP CHem test. If a questoin is like worth ONE POINT and then i have the right answer except an extra digit like 3.541 instead of 3.54 will i LOSE all credit?</p>