Search found 50 matches
Re: naming
I don't think there will be tons of naming, but we don't know what he's gonna throw at us so unfortunately the only way to be really prepared for anything is to memorize the entire worksheet he emailed us
- Thu Dec 05, 2019 2:50 pm
- Forum: Lewis Acids & Bases
- Topic: I am having trouble
- Replies: 4
- Views: 354
Re: I am having trouble
If the reactant is e- deficient, then its a lewis acid, and if it has extra, then its a lewis base :)
- Thu Dec 05, 2019 2:47 pm
- Forum: Biological Examples
- Topic: Biological questions on the final
- Replies: 5
- Views: 503
Re: Biological questions on the final
I would just study the ones from lecture like myoglobin, hemoglobin, and cisplatin!
- Thu Dec 05, 2019 2:43 pm
- Forum: Identifying Acidic & Basic Salts
- Topic: Salts as Acids and Bases
- Replies: 2
- Views: 216
Re: Salts as Acids and Bases
I believe a salt is a strong conjugate base fs the original acid and it is a strong conjugate acid if the original base is weak
- Thu Dec 05, 2019 2:40 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: using Ka and Pka
- Replies: 4
- Views: 342
Re: using Ka and Pka
pKa and Ka are used to help determine which acid is stronger than the other. They are called the dissociation constant
- Tue Dec 03, 2019 9:42 am
- Forum: Naming
- Topic: Memorizing
- Replies: 9
- Views: 631
Re: Memorizing
Sadly yes I think we do
- Tue Dec 03, 2019 9:40 am
- Forum: Student Social/Study Group
- Topic: Practice Final
- Replies: 17
- Views: 1437
Re: Practice Final
I’m not sure but there are 83 hours of review sessions this week which should help.
- Tue Dec 03, 2019 9:39 am
- Forum: Ionic & Covalent Bonds
- Topic: bond lengths
- Replies: 4
- Views: 488
Re: bond lengths
I don’t think we need to know exact bond lengths. Probably just need to know what bond length is and which molecules have shorter or longer bonds
- Tue Dec 03, 2019 9:38 am
- Forum: Student Social/Study Group
- Topic: Calming the Nerves
- Replies: 18
- Views: 937
Re: Calming the Nerves
Honestly just breathe deeply in though your nose and out through your mouth for a minute or so it really helps me calm down.
- Tue Dec 03, 2019 9:38 am
- Forum: Student Social/Study Group
- Topic: Grades
- Replies: 14
- Views: 1028
Re: Grades
He said he doesn’t curve tests, but I think he will curve the class.
- Wed Nov 20, 2019 4:23 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: Boiling Point
- Replies: 7
- Views: 598
Re: Boiling Point
SO2 would have the higher boiling point because S has more electrons making it have higher attractive forces making the dipole-dipole interactions stronger in SO2 than in O3
- Wed Nov 20, 2019 4:19 pm
- Forum: General Science Questions
- Topic: Chemitry Series
- Replies: 5
- Views: 439
Re: Chemitry Series
A ton of people say that 14a is the most difficult for them but others say they hated 14C. It really just depends on the person and what comes easily to them.
- Wed Nov 20, 2019 4:18 pm
- Forum: General Science Questions
- Topic: Final
- Replies: 10
- Views: 733
Re: Final
It is cumulative
- Wed Nov 20, 2019 4:18 pm
- Forum: General Science Questions
- Topic: Test 2
- Replies: 7
- Views: 594
Re: Test 2
You must memorize them
- Wed Nov 20, 2019 4:17 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: T-Shaped ??
- Replies: 9
- Views: 800
Re: T-Shaped ??
AX3E2 is the t-shaped molecule. AX4E is the see saw shape.
- Sun Nov 17, 2019 1:35 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: regions of electron density
- Replies: 10
- Views: 541
Re: regions of electron density
its areas where electrons are most likely found so yes it does include lone pairs
- Sun Nov 17, 2019 1:34 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR
- Replies: 6
- Views: 402
Re: VSEPR
VSEPR is what we use to determine the shape of a molecule to limit repulsion
- Sun Nov 17, 2019 1:33 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Van Der Waals Interaction
- Replies: 11
- Views: 651
Re: Van Der Waals Interaction
yes all molecules have them
- Sun Nov 17, 2019 1:33 pm
- Forum: General Science Questions
- Topic: Test 2
- Replies: 7
- Views: 413
Re: Test 2
we haven't really learned any equations or anything so mostly conceptual based i believe
- Sun Nov 17, 2019 1:32 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: This Week Test
- Replies: 12
- Views: 777
Re: This Week Test
it will be on everything from the midterm on meaning 2D to the lecture on friday
- Sun Nov 10, 2019 5:51 pm
- Forum: Dipole Moments
- Topic: dipole moments
- Replies: 2
- Views: 232
Re: dipole moments
It depends on how long the bond length is
- Sun Nov 10, 2019 5:50 pm
- Forum: Electronegativity
- Topic: Differences in Electronegativity
- Replies: 5
- Views: 389
Re: Differences in Electronegativity
I suppose we should remember the electronegativity trends but probably not bonds specifically.
- Sun Nov 10, 2019 5:49 pm
- Forum: Bond Lengths & Energies
- Topic: test 2
- Replies: 16
- Views: 926
Re: test 2
Nope it is not cumulative. It only tests us on material past the midterm. The final however is cumulative
- Sun Nov 10, 2019 5:48 pm
- Forum: Octet Exceptions
- Topic: Reasoning for Octet Exception
- Replies: 19
- Views: 1255
Re: Reasoning for Octet Exception
The d orbital can account for the extra electrons which is why elements from period 3 and beyond can have an expanded octet
- Sun Nov 10, 2019 5:47 pm
- Forum: Dipole Moments
- Topic: Dipole Moment
- Replies: 6
- Views: 191
Re: Dipole Moment
A dipole moment is not the same a dipole because it is only temporary
- Sun Nov 03, 2019 2:10 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: electron configuration
- Replies: 4
- Views: 215
Re: electron configuration
Remove them from the 4s orbital before the 3D orbital unless it is an exception of the rule such as Cr where the electron configuration is odd, but usually you always take it out of 4s first.
- Sun Nov 03, 2019 2:07 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: electron configuration
- Replies: 2
- Views: 167
Re: electron configuration
When empty, the 3D orbitals energy is higher than 4s but when it fills, the energy lowers hence why you put 3D before 4s
- Sun Nov 03, 2019 2:05 pm
- Forum: Bond Lengths & Energies
- Topic: Strength of Bonds
- Replies: 16
- Views: 710
Re: Strength of Bonds
Shorter bonds are stronger. Single bonds are the longest and weakest whereas triple bonds are the shortest and strongest.
- Sun Nov 03, 2019 2:01 pm
- Forum: Trends in The Periodic Table
- Topic: Exceptions
- Replies: 4
- Views: 139
Re: Exceptions
When I went to a review session, the TA said that all the elements in the same group as oxygen follow the same exception as oxygen but it is just not as pronounced.
- Sun Nov 03, 2019 1:57 pm
- Forum: Lewis Structures
- Topic: Central Atom
- Replies: 3
- Views: 103
Re: Central Atom
Most often it is the atom with the least electro negativity and has the most valence electrons. :)
- Sun Oct 27, 2019 6:50 pm
- Forum: General Science Questions
- Topic: Extra Credit
- Replies: 19
- Views: 856
Re: Extra Credit
Not anything that Dr. Lavelle has mentioned so far
- Sun Oct 27, 2019 6:49 pm
- Forum: General Science Questions
- Topic: Study Guides
- Replies: 6
- Views: 327
Re: Study Guides
I believe there is a test bank on chemistry community you could check out
- Sun Oct 27, 2019 6:48 pm
- Forum: General Science Questions
- Topic: Midterms
- Replies: 22
- Views: 1008
Re: Midterms
I believe it is everything we have learned so far. So basically from Fundamentals until now
- Sun Oct 27, 2019 6:47 pm
- Forum: Lewis Structures
- Topic: Video Modules
- Replies: 11
- Views: 471
Re: Video Modules
He hasn't mentioned anything on adding more video modules. Probably best to email and ask him
- Sun Oct 27, 2019 6:46 pm
- Forum: Resonance Structures
- Topic: Bond lenghts.
- Replies: 11
- Views: 425
Re: Bond lenghts.
Dr. Lavelle did not say anything about needing to know bond lengths so I doubt it
- Fri Oct 18, 2019 8:46 am
- Forum: *Shrodinger Equation
- Topic: Nodal Planes
- Replies: 6
- Views: 358
Re: Nodal Planes
3 nodal planes
- Fri Oct 18, 2019 8:46 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: electron configurations
- Replies: 3
- Views: 191
Re: electron configurations
You would always remove the electron from the higher energy subshell
- Fri Oct 18, 2019 8:44 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Drawing Orbitals
- Replies: 5
- Views: 289
Re: Drawing Orbitals
He won’t but it’s nice to know what they look like to visualize them
- Fri Oct 18, 2019 8:43 am
- Forum: Properties of Light
- Topic: Constants and equations
- Replies: 4
- Views: 203
Re: Constants and equations
They will give us a sheet with the constants on them but I’d say it’s probably a good idea to start remembering them to get ahead.
- Fri Oct 18, 2019 8:41 am
- Forum: Photoelectric Effect
- Topic: Speed of Light
- Replies: 29
- Views: 1653
Re: Speed of Light
Always the same number!
- Thu Oct 10, 2019 11:50 am
- Forum: Limiting Reactant Calculations
- Topic: Actual Yield
- Replies: 6
- Views: 577
Re: Actual Yield
Most of the time they will give the actual yield in the problem. If it is not given, then they probably will not ask for you to calculate the precent yield unless other information is given.
- Thu Oct 10, 2019 11:46 am
- Forum: Einstein Equation
- Topic: Numbers to memorize [ENDORSED]
- Replies: 37
- Views: 4247
Re: Numbers to memorize [ENDORSED]
Not for this test, but when we are given the test, most of the basic numbers are on a little "cheat sheet" on the front of the page
- Thu Oct 10, 2019 11:45 am
- Forum: Empirical & Molecular Formulas
- Topic: Question E9
- Replies: 4
- Views: 262
Re: Question E9
You should probably learn basic names like sulfate which is SO4 because it comes up pretty often.
- Thu Oct 10, 2019 11:44 am
- Forum: Balancing Chemical Reactions
- Topic: Fractions
- Replies: 34
- Views: 1489
Re: Fractions
I would say convert it to an integer
- Thu Oct 10, 2019 11:43 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Test 1 [ENDORSED]
- Replies: 107
- Views: 27718
Re: Test 1 [ENDORSED]
I had this same question and no we do not have to, at least for the test this week.
- Thu Oct 03, 2019 8:12 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: G. 7
- Replies: 2
- Views: 168
Re: G. 7
First things first, you must find out how many grams on KNO3 are on 510g. So to do that, you must divide 5.45 by 100 which gets you 0.0545. Then you multiply that by 510g. This tells you how many grams of KNO3 is in the 510g solution which is 27.8g . So then for the second part of the problem, you w...
- Thu Oct 03, 2019 8:06 pm
- Forum: Balancing Chemical Reactions
- Topic: Compound names
- Replies: 11
- Views: 635
Re: Compound names
My TA said that we do not need to know the names of the compounds yet, they will be given to us on the test
- Thu Oct 03, 2019 7:32 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Determining Molar Mass
- Replies: 19
- Views: 700
Re: Determining Molar Mass
Personally, I just do 15.999 but in my discussion my TA just rounded to 16 so I think it should be fine.
- Wed Oct 02, 2019 5:31 pm
- Forum: Significant Figures
- Topic: Sig Fig Decimal
- Replies: 10
- Views: 502
Re: Sig Fig Decimal
114 and 114. have the same number of sig figs but adding the "." does seem a little redundant so I'd say stick with 114. But 114.0 is not the same as 114 because it has 4 sig figs.
- Wed Oct 02, 2019 5:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: homework
- Replies: 5
- Views: 216
Re: homework
We turn in our 5 problems that we choose to do this week (week 1) on Friday, but every week after that, we must turn in our homework into our TAs during your office hours :)