Search found 64 matches
- Sun Dec 08, 2019 9:34 pm
- Forum: Student Social/Study Group
- Topic: Class Grading
- Replies: 44
- Views: 3537
Re: Class Grading
Yes I believe that is correct!
- Sun Dec 08, 2019 9:34 pm
- Forum: Hybridization
- Topic: Pi bond
- Replies: 10
- Views: 748
Re: Pi bond
Yes, they are always in the p orbital.
- Sun Dec 08, 2019 9:33 pm
- Forum: Limiting Reactant Calculations
- Topic: A different way
- Replies: 8
- Views: 835
Re: A different way
I consider that to be the best way to do it, but I'm not sure.
- Sun Dec 08, 2019 9:33 pm
- Forum: Lewis Acids & Bases
- Topic: What does it mean when something is strong?
- Replies: 8
- Views: 599
Re: What does it mean when something is strong?
I think it means that they completely dissociate.
- Sun Dec 08, 2019 9:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14A FInal
- Replies: 6
- Views: 488
Re: 14A FInal
I think it will be about 10 days from today.
- Sun Dec 08, 2019 9:31 pm
- Forum: Administrative Questions and Class Announcements
- Topic: curve
- Replies: 8
- Views: 619
Re: curve
I am pretty sure he doesn't curve any of the tests, and then depending on everyone's grades he'll probably curve everyone's total class points.
- Sun Dec 08, 2019 9:30 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: The spin of a quantum number
- Replies: 6
- Views: 504
Re: The spin of a quantum number
I don't think you can tell, but you should just know they are spin paired so one is positive and one is negative.
- Sun Dec 08, 2019 9:29 pm
- Forum: Significant Figures
- Topic: Sig Figs on Tests
- Replies: 24
- Views: 2178
Re: Sig Figs on Tests
You should match it with the sig figs the problem gives you, or the lowest amount.
- Sun Dec 08, 2019 9:29 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: n, l ,ml, ms
- Replies: 13
- Views: 1444
Re: n, l ,ml, ms
I think it depends on which direction the electron is going (either up or down).
- Sun Dec 08, 2019 9:28 pm
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 336738
Re: Final Jitters
I find it helpful to not try to cram too much right before the test, and instead do something relaxing after I've studied enough.
- Sun Dec 08, 2019 9:26 pm
- Forum: General Science Questions
- Topic: 50 post grade
- Replies: 25
- Views: 1760
Re: 50 post grade
I think you just need to have 50 posts by the end of the quarter, but I'm not positive.
- Sat Dec 07, 2019 5:06 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: why is EDTA hexadentate?
- Replies: 1
- Views: 194
why is EDTA hexadentate?
Why is EDTA hexadentate? I understand that it is because of lone pairs on 2 nitrogens and 4 oxygens, but why are only 4 of the oxygens included in this calculation? Thanks!
- Mon Dec 02, 2019 7:39 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: pH formula?
- Replies: 69
- Views: 3615
Re: pH formula?
The formula is -log[H+] but I'm not sure if we need to know how to derive that.
- Mon Dec 02, 2019 7:38 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final tips
- Replies: 19
- Views: 1017
Re: Final tips
I would say to watch Youtube videos if you're confused about general concepts and to do the UA problem set.
- Mon Dec 02, 2019 7:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam
- Replies: 3
- Views: 325
Re: Final Exam
I think it's mostly new material but definitely some stuff from the past three tests as well.
- Mon Dec 02, 2019 7:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Past exams
- Replies: 7
- Views: 689
Re: Past exams
I'm pretty sure the test bank does not carry his old tests unfortunately.
- Mon Dec 02, 2019 7:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Difficulty
- Replies: 14
- Views: 845
Re: Difficulty
This class has been one of my hardest classes, especially because I don't have much chem experience at all.
- Sun Dec 01, 2019 6:31 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Test Grades
- Replies: 6
- Views: 411
Re: Test Grades
My grade is also a zero but I think they should be inputted this coming week!
- Sun Dec 01, 2019 6:23 pm
- Forum: Student Social/Study Group
- Topic: Study Strategies
- Replies: 6
- Views: 442
Re: Study Strategies
I did the same and I have the same concerns about the final. I'm thinking going to the review sessions will help!
- Sun Dec 01, 2019 6:15 pm
- Forum: Naming
- Topic: Naming coordination compounds
- Replies: 5
- Views: 352
Re: Naming coordination compounds
The roman numeral corresponds with the oxidation state I believe.
- Sun Dec 01, 2019 6:10 pm
- Forum: General Science Questions
- Topic: Final Review
- Replies: 3
- Views: 306
Re: Final Review
I heard that there will be one and I think he's announcing the sessions soon!
- Sun Dec 01, 2019 6:09 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Content of the final
- Replies: 11
- Views: 975
Re: Content of the final
I don't think we learned that but as someone said above whatever we don't talk about by Wednesday won't be on there.
- Fri Nov 22, 2019 8:14 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Ionic
- Replies: 6
- Views: 428
Re: Ionic
It is an intramolecular force!
- Fri Nov 22, 2019 8:13 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polarity
- Replies: 7
- Views: 280
Re: Polarity
The molecule is nonpolar if all of its dipole moments cancel out! It can still have dipole moments and be nonpolar, but if they do not all cancel out then it is polar.
- Fri Nov 22, 2019 8:12 pm
- Forum: Hybridization
- Topic: lone pairs in hybridization
- Replies: 8
- Views: 506
Re: lone pairs in hybridization
Yes, the lone pairs are included in hybridization!
- Fri Nov 22, 2019 8:12 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polar vs. Nonpolar
- Replies: 6
- Views: 286
Re: Polar vs. Nonpolar
It would still be polar because the dipole moments would all have to be the same in order for them to cancel out.
- Fri Nov 22, 2019 8:10 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: london forces
- Replies: 9
- Views: 448
Re: london forces
The molecule that is most polarizable (larger, more electrons) will have the largest London forces.
- Fri Nov 22, 2019 8:09 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone pairs
- Replies: 13
- Views: 722
Re: Lone pairs
Only lone pairs on the central atom count for this!
- Thu Nov 14, 2019 4:08 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape Name
- Replies: 17
- Views: 831
Re: Molecular Shape Name
My TA said that we have to know all of them, and how to predict which shapes various molecules will be.
- Thu Nov 14, 2019 4:07 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: format of test
- Replies: 5
- Views: 247
Re: format of test
I believe the test format will be basically the same as test 1, and the topics will be everything from 3F in the textbook up to what we learn in lecture tomorrow.
- Thu Nov 14, 2019 4:06 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: How to study for test 2?
- Replies: 3
- Views: 185
Re: How to study for test 2?
I think it's going to be everything starting from what wasn't covered on the midterm (3F in the textbook), up to whatever is covered tomorrow in lecture.
- Thu Nov 14, 2019 4:05 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Do we need to know bent structures?
- Replies: 5
- Views: 219
Re: Do we need to know bent structures?
Yes, as stated above I think we do need to know bent structures.
- Thu Nov 14, 2019 4:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 11
- Views: 510
Re: Test 2
I'm going to do all of the homework problems starting from section 3F up until what we learn in lecture tomorrow, and watch some videos online for extra help!
- Thu Nov 07, 2019 12:43 pm
- Forum: Bond Lengths & Energies
- Topic: Test 2 Topics
- Replies: 40
- Views: 2087
Re: Test 2 Topics
I believe it will only include post-midterm material!
- Thu Nov 07, 2019 12:42 pm
- Forum: Student Social/Study Group
- Topic: Class Grading
- Replies: 44
- Views: 3537
Re: Class Grading
Yes! Even though we get a point score for every test we won't find out the actual letter grades until the end of the quarter.
- Thu Nov 07, 2019 12:41 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Bohr Frequency
- Replies: 6
- Views: 303
Re: Bohr Frequency
When energy is absorbed, the value of n increases because it represents energy level.
- Thu Nov 07, 2019 12:40 pm
- Forum: Trends in The Periodic Table
- Topic: ionic radii
- Replies: 4
- Views: 234
Re: ionic radii
As the people above said, cations are larger than the neutral atoms because there are more electrons that are pushing against each other and expanding the radios. The atomic radius of neutral elements decreases across a period because there are also increasing amounts of protons pulling in the elect...
- Thu Nov 07, 2019 12:35 pm
- Forum: Ionic & Covalent Bonds
- Topic: Mini Dino Nuggets 2b
- Replies: 6
- Views: 243
Re: Mini Dino Nuggets 2b
Fluorine is the most electronegative element, and therefore the bond with F would be more ionic.
- Fri Nov 01, 2019 10:18 pm
- Forum: Photoelectric Effect
- Topic: important part of photoelectric effect
- Replies: 5
- Views: 412
Re: important part of photoelectric effect
I think it is also really important that the photoelectric effect displays the photon properties of light, rather than the wave properties of light.
- Fri Nov 01, 2019 10:12 pm
- Forum: Ionic & Covalent Bonds
- Topic: Midterm
- Replies: 28
- Views: 1233
Re: Midterm
He mentioned in lecture that the midterm will only cover material up to section 2D, due to class being cancelled this past Monday.
- Fri Nov 01, 2019 10:10 pm
- Forum: Electronegativity
- Topic: Electron Negativity vs affinity?
- Replies: 5
- Views: 165
Re: Electron Negativity vs affinity?
I believe electronegativity is a measure of how much an atom "wants" to gain an electron, whereas electron affinity is a measure of the amount of energy released when it does gain an electron.
- Fri Nov 01, 2019 10:08 pm
- Forum: Lewis Structures
- Topic: Compound Names
- Replies: 3
- Views: 142
Compound Names
If we are asked to draw a lewis structure for a compound and are given its name (such as ammonium chloride, potassium phosphide, or sodium hypochlorite in one of the practice problems) but are not given the formula of the compound, where do we start? I am still a bit confused on how to go from the n...
- Fri Nov 01, 2019 10:02 pm
- Forum: Lewis Structures
- Topic: lewis drawings
- Replies: 8
- Views: 447
Re: lewis drawings
Yes, after going to some of the review sessions I believe we are just supposed to draw the most stable option in this case!
- Fri Nov 01, 2019 9:58 pm
- Forum: Student Social/Study Group
- Topic: Need Notes
- Replies: 10
- Views: 679
Re: Need Notes
Does anyone have the notes from lecture last Friday (10/11)? I couldn't see well from where I was sitting and want to clarify a few things. Thanks so much! If you still need the notes from Friday I have them! Just let me know how to send them to you. Hi! I actually don't need the notes anymore but ...
- Thu Oct 24, 2019 5:01 pm
- Forum: Properties of Light
- Topic: Midterm
- Replies: 4
- Views: 298
Re: Midterm
Yes, I believe the people above are correct that he will have a review session once the test gets closer!
- Thu Oct 24, 2019 4:57 pm
- Forum: Bond Lengths & Energies
- Topic: Bond lengths
- Replies: 15
- Views: 992
Re: Bond lengths
I believe we would be given this!
- Thu Oct 24, 2019 4:57 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3039648
Re: Post All Chemistry Jokes Here
What do you do with a dead chemist?
Barium!
Barium!
- Thu Oct 24, 2019 4:53 pm
- Forum: Properties of Electrons
- Topic: hw
- Replies: 6
- Views: 349
Re: hw
Yes, my TA told us that it was fine for this week.
- Thu Oct 24, 2019 4:52 pm
- Forum: Lewis Structures
- Topic: lewis drawings
- Replies: 8
- Views: 447
Re: lewis drawings
I'm also not sure, but I am planning to go to his office hours so if I find out I will post it here!
- Fri Oct 18, 2019 7:12 pm
- Forum: Student Social/Study Group
- Topic: Need Notes
- Replies: 10
- Views: 679
Re: Need Notes
Hi, last Wednesday I had a job interview and had to leave early so I did't get a chance to get the notes down. If anyone can please send them that would be AMAZING and I would greatly appreciate it :) **Also, if anyone needs any other notes post here!! HI! I have notes from that lecture! If you can...
- Fri Oct 18, 2019 7:09 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3039648
Re: Post All Chemistry Jokes Here
Wait, are all these jokes too basic for you? Because I see no reaction.
- Fri Oct 18, 2019 7:04 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Advice for studying
- Replies: 92
- Views: 6541
Re: Advice for studying
For the first test I watched youtube videos and went to some of the Step Up sessions which were really helpful, but I think the most helpful thing I did was just doing all of the homework problems!
- Fri Oct 18, 2019 6:56 pm
- Forum: Student Social/Study Group
- Topic: Need Notes
- Replies: 10
- Views: 679
Re: Need Notes
plopezcordon_4C wrote:Hi! I missed lecture on Wednesday (10/16) and was wondering if anyone is willing to see their notes :( I would really appreciate it!
I took notes on Wednesday! I can send you them - just let me know how :)
- Wed Oct 16, 2019 8:01 pm
- Forum: Student Social/Study Group
- Topic: Need Notes
- Replies: 10
- Views: 679
Re: Need Notes
Does anyone have the notes from lecture last Friday (10/11)? I couldn't see well from where I was sitting and want to clarify a few things. Thanks so much!
- Sun Oct 13, 2019 12:41 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 2 Homework Problems [ENDORSED]
- Replies: 67
- Views: 7272
Re: Week 2 Homework Problems [ENDORSED]
I believe we only have to do Quantum World problems this upcoming week (Week 3).
- Sun Oct 13, 2019 12:39 pm
- Forum: Einstein Equation
- Topic: Numbers to memorize [ENDORSED]
- Replies: 37
- Views: 4052
Re: Numbers to memorize [ENDORSED]
Elizabeth Harty 3A wrote:Do we have to memorize equations for the test then?
No, they give the equations on a sheet of paper with the test.
- Sun Oct 13, 2019 12:37 pm
- Forum: Significant Figures
- Topic: Sig Figs at the Beginning or End
- Replies: 14
- Views: 4722
Re: Sig Figs at the Beginning or End
My TA said to use as many decimals as possible throughout the problem and calculations, and then only do Sig Figs for the final answer.
- Sun Oct 13, 2019 12:36 pm
- Forum: Photoelectric Effect
- Topic: Proportional sign
- Replies: 4
- Views: 152
Re: Proportional sign
∝ is the sign! Basically instead of writing E = hv, you could write E ∝ v, which means that E is proportional to v (by a factor of h).
- Sun Oct 13, 2019 12:32 pm
- Forum: Limiting Reactant Calculations
- Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
- Replies: 68
- Views: 6657
Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Yes, I believe you will get credit as long as you show your work.
- Thu Oct 03, 2019 9:52 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 6808
Re: Study Advice
I went to 2 Step Up sessions for the first time today and they were very helpful! I would definitely recommend going. We went over some of the most challenging homework questions and in one of them a worksheet was provided.
- Thu Oct 03, 2019 9:47 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: avogadro number
- Replies: 7
- Views: 712
Re: avogadro number
Avogadro's number (6.022 x 10^23) represents the amount of something (for example atoms) contained in 1 mole of a substance. One way we have used it so far is when converting from number of atoms to moles, or vice versa. If given the amount of atoms, divide by Avogadro's number to find the amount of...
- Thu Oct 03, 2019 9:41 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3039648
Re: Post All Chemistry Jokes Here
I'd tell you a chemistry joke, but all the good ones argon.
- Thu Oct 03, 2019 9:40 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Avogadro's Number
- Replies: 8
- Views: 591
Re: Avogadro's Number
Yes, because Avogadro's Number represents the amount of atoms per mole. Therefore when given the amount of moles you divide by Avogadro's Number to get the amount of atoms.
- Thu Oct 03, 2019 9:38 pm
- Forum: Student Social/Study Group
- Topic: Study Group Fall 2019
- Replies: 32
- Views: 2743
Re: Study Group Fall 2019
I'm definitely interested!