Does anyone remember TTCE question
Li, Na and K have similar chemical properties
They have same no. of valence electrons.
This question is pretty much ambiguous because Li exhibits diagonal relationship with Mg and hence is more similar to Mg and has many of it’s chemical properties (not physical) different from Na and K. I put FT but people say that it is simply TTCE. Does anyone have any clue?
@BMWM550D I put TTCE. Its not asking if they had the most similar, just if they had similar.
@Zeppelin7 It has to be either TTCE or FT. In general it should be TTCE but first member of a group is very much different from the rest of the members. Atleast this is what I was taught in the class. The question is no doubt a bit confusing. They should have put Na, K and Rb instead
@BMWM550D My first reaction:
You are over-thinking this. The Group 1 elements are all very similar, most notably in how they react with water. Chemically, they are all good reducing agents and form +1 ions frequently.
Upon further review:
You are absolutely right in that the test should have used Na, K, and Rb as opposed to Li, Na, K. In fact, other tests (notably the ACS Olympiad ones) tend to avoid using lithium in any test questions because of its sometimes unexpected properties. The question is ambiguous, and both answers should be accepted.
Ambiguities like this one call into question the validity of the entire test. I remeber one of the questions that asked which technique would be best to separate sugar from water. The answer CB wants is “Evaporation,” but true evaporation is such a slow process that it would have minimal practical use. One of the choices should have been “Boiling” or “Vaporization (which encompasses several methods).”
The nice thing about the ACT is that these “ambiguous questions” never seem to come up.
Question: there was a statement in the true false section like
“Chlorine is very electronegative”
wth does “very electronegativ” even mean? I know it’s pretty electronegative…i put true for that one
true true CE
@Bse15578 Well, the Barron’s book curve is 10-15 questions, so that’s probably why.
@BioBasedGod I put true, but if you think that deeply, a lot of questions could be very subjective.
Lets discuss the test… Together!
Overall, the test was easy but the TTCE section was a bit harder for me.
What are your thoughts?
@Frigidcold Chrlorine is the 3rd most electronegative element.
A chemistry test should never have subjective questions.
YOOO did anyone out there take the sunday test?? >3<
So what’s the final consensus on the equilibrium color change question on the TTCE section? If I remember correctly I put F,F
@vdch4168 I put T,F but I had no idea whether the first statement was right or wrong but I feel like most people are saying its FF
@1golfer1 That’s what I’m saying 
hopefully curve will be nice, it sounds like there were a lot of controversial questions, anyhow
guys does anyone remember the question that asked for lowest or highest concentration of H+? i don’t remember the exact phrasing but I think I put A?
It was A, 7x10^-4
@Zeppelin7 if there was no color change I thought it could be no reaction or there could just be no metal ions so that’s why I put false.
Is there any partial credit for the TTCE section?
@vdch4168 i don’t think so
wait, the one with chlroine
that was
FT right