<p>For the reactions, can you give me a list of those that are important, like the metals reacting with water/ acid whatever because i don’t remember how some things react. Would memorizing those reactions that pertain to the reactivity series be useful?
For the colors-would memorizing a list of the colors of gases and flame color of alkali metals be useful?</p>
<p>Thanks a lot for the help!</p>
<p>It is going from Zn^2+ (oxidation state of +2) to Zn (oxidation state of 0).
Therefore, it is gaining electrons and is being reduced. It is at the cathode.</p>
<p>
</p>
<p>It may help. They occasionally ask that.</p>
<p>
</p>
<p>They come up with all kinds of reactions. It would be very difficult to list all the different kinds. A lot of the reactions are very simple. You will remember most of them. Also, most of the reactions involve just balancing them out.</p>
<ol>
<li>It would be CO2 because it forms Carbonic Acid when dissolved in water.</li>
</ol>
<p>What do those lines mean though? Are they mixed in together or what?</p>
<p>edit: i’m refering to the electrochemical cell diagram</p>
<p>Okay, thank you. I’m in AP chemistry right now. Will studying AP chemistry material prepare me entirely for the SAT subject test if I take the subject test in May/June? (I don’t want to study extra for a subject test because I’m lazy haha.)</p>
<p>Zn(s)|ZnCl2(aq)| |Cl^-(aq)|Cl2(g)|C(s)</p>
<p>Product/Electrode l What is in solution l salt bridge (often left blank) l What is in solution l product l electrode</p>
<p>(in this case)</p>
<ol>
<li>For titrations, is the equivalence point when the indicator changes color?</li>
<li>What do we need to know about redox stuff?</li>
<li>Do we need to balance redox rxns?</li>
<li>Do we need to know quantum numbers?</li>
<li>What angles do we need to know for Lewis structures?</li>
<li>Which VESPRs do we need to know?</li>
<li>Do we need to know hybridization?</li>
<li>What is chromatography, I don’t really get it?</li>
</ol>
<p>Thanks.</p>
<p>Which of the following is the most chemically reactive?</p>
<p>(A) Li<br>
(B) Na<br>
(C) K<br>
(D) Rb<br>
(E) Cs </p>
<p>A is not the correct answer. You should have selected E.
Explanation</p>
<p>All of the answer choices are alkali metals, so all react violently with water. The larger they are, the more violent the reaction. This is because in larger atoms, the valence electrons are less tightly held due to increased distance from the nucleus and increased shielding.</p>
<p>I was doing a practice test on Sparknotes. I selected Li and as per the above explanation it should be Li. Li has a smaller size than Cs, doesn’t it?</p>
<p>Li is smaller. It is saying that the larger one would be more reactive. Because of electron shielding, Cs is larger and more reactive.</p>
<p>^ Thanks. I feel like such a noob. Read the thing again. Jeez, I hope I don’t do any of this crap tomorrow!</p>
<p>No problem. Good luck. Anybody else need help?</p>
<p>Yes. ^(x5). :)</p>
<p>SAT is coming up. Anyone need anymore help?</p>
<p>Yes, I will be getting some questions for you to help me with. But for now I would like to ask if you have used the sparknotes online book. Does it go beyond what we are supposed to know for the Chemistry test… This is because I have began using it and I have come across things I never learned in my Barrons. Things like spin quantum numbers ( positive and negative halves)…etc.</p>
<p>I never used either of those resources. If you are taking AP Chemistry, that may be a good resource is it has extra information; however, I imagine Barron’s would be pretty good for this test.</p>
<p>Which species can form intermolecular hydrogen bonds with other molecules or ions of the same type?</p>
<p>I. HF
II. CH3F
III. NH4 1+</p>
<p>A.) I
B.) III
C.) I and III
D.) I, II, III
E.) I and II</p>