Search found 30 matches
- Thu Dec 06, 2018 3:42 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Drawing trigonal planar
- Replies: 4
- Views: 907
Re: Drawing trigonal planar
It's fine if you draw just a regular lewis structure
- Thu Dec 06, 2018 3:35 pm
- Forum: General Science Questions
- Topic: Chemistry Community [ENDORSED]
- Replies: 7
- Views: 857
Re: Chemistry Community [ENDORSED]
Ahmet_Dikyurt_3L wrote:Is this the last week of chemistry community questions, or do we have to ask questions during the finals week(even though our final is on a sunday)?
I think you should post until Saturday just to be safe because that's before the final.
- Thu Dec 06, 2018 3:32 pm
- Forum: General Science Questions
- Topic: Studying Methods
- Replies: 6
- Views: 1062
Re: Studying Methods
Maybe use youtube just for clarification of concepts but I wouldn't solely rely on the YouTube videos
Re: Spelling
ammine
- Wed Nov 28, 2018 1:15 pm
- Forum: Electronegativity
- Topic: Electronegativity Values
- Replies: 4
- Views: 740
Re: Electronegativity Values
The values aren't given on the periodic table so knowing the trend would be helpful to use as an estimate of how electronegative a molecule is. Also keep in mind that fluorine is the most electronegative
- Mon Nov 26, 2018 8:25 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizability
- Replies: 4
- Views: 760
Re: Polarizability
AlyssaBei_1B wrote:For polarizability, would the trend decrease across a period from right to left because the atoms are getting smaller from right to left?
Yes. Also because the more negatively charged the atom is, the more polarizability.
- Sat Nov 24, 2018 11:42 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: vsepr shape
- Replies: 6
- Views: 692
Re: vsepr shape
sallina_yehdego 1B wrote:Here's a website that can also help.
http://chemed.chem.purdue.edu/genchem/t ... vsepr.html
This is very helpful
- Sat Nov 24, 2018 11:40 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Drawing Structures on Test
- Replies: 11
- Views: 990
Re: Drawing Structures on Test
Focus on naming the structure and bond angles
- Sat Nov 24, 2018 11:39 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 3
- Replies: 10
- Views: 1027
Re: Test 3
Focus on both outlines because a bit of outline 3 and outline 4 will be on the test
- Fri Nov 16, 2018 8:51 pm
- Forum: Hybridization
- Topic: Test 3
- Replies: 5
- Views: 751
Re: Test 3
I'd also look at the outline for the test and see what exactly you need to know
- Fri Nov 16, 2018 8:46 pm
- Forum: Lewis Structures
- Topic: Expanded Octet
- Replies: 8
- Views: 910
Re: Expanded Octet
Elements with expanded octets can have more than 8 electrons. Usually elements in period 3 have expanded octets meaning you can put more than 8 electrons on those elements
- Fri Nov 16, 2018 1:14 pm
- Forum: Student Social/Study Group
- Topic: curve?
- Replies: 20
- Views: 3021
Re: curve?
There is no curve for the class however, 250/500 is a c- and the rest of the grades are based on a straight/regular scale.
- Wed Nov 07, 2018 3:36 pm
- Forum: Ionic & Covalent Bonds
- Topic: Metalloids
- Replies: 2
- Views: 291
Re: Metalloids
They can form both covalent and ionic bonds
- Wed Nov 07, 2018 12:58 pm
- Forum: Administrative Questions and Class Announcements
- Topic: HW for this week
- Replies: 2
- Views: 351
Re: HW for this week
You can turn in problems that cover anything we did in class last week up until this week.
- Wed Nov 07, 2018 12:56 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 7
- Views: 974
Re: Formal Charge
In most cases you want your formal charge to equal to zero, however, there are times when the formal charge will not equal to zero. That doesn't mean you're wrong
- Fri Nov 02, 2018 1:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Section
- Replies: 2
- Views: 434
Re: Section
I think you should talk to your TA and confirm, but I doubt that there's discussion section
- Fri Nov 02, 2018 1:11 pm
- Forum: Student Social/Study Group
- Topic: Midterm
- Replies: 15
- Views: 1558
Re: Midterm
The midterm is 8 question with multiple parts.
- Thu Nov 01, 2018 12:43 pm
- Forum: Lewis Structures
- Topic: How to determine central atom
- Replies: 8
- Views: 1484
Re: How to determine central atom
always the atom with the lowest ionization energy. For example, in H2O, O would be in the middle because it has the lowest ionization energy
- Fri Oct 26, 2018 1:14 pm
- Forum: Ionic & Covalent Bonds
- Topic: Chemical Bonding
- Replies: 8
- Views: 816
Re: Chemical Bonding
Today was just a review for me because I recall most of the stuff he discussed today from high school chem. We'll probably go more in depth starting Monday
- Fri Oct 26, 2018 1:03 pm
- Forum: Trends in The Periodic Table
- Topic: Removing 2nd Electron
- Replies: 9
- Views: 783
Re: Removing 2nd Electron
It's harder to remove a 2nd electron because it has a higher electrostatic attraction
- Fri Oct 26, 2018 12:57 pm
- Forum: Einstein Equation
- Topic: Units
- Replies: 6
- Views: 941
Re: Units
I don't think units are given on the test, they are something you should know because it helps when you need to cancel out units to get your final answer
- Tue Oct 16, 2018 4:26 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chemistry Community Questions Due Date
- Replies: 7
- Views: 585
Re: Chemistry Community Questions Due Date
They are due Sunday by 11:59pm
- Mon Oct 15, 2018 1:14 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8594
Re: How does grading for discussion posts work?
Does the number of posts you have roll over to the next week? Like if you were to have 1 post one week and then 5 the next, would that count as 6 points? I don't think that they do because in the syllabus it says to have 3 posts per week which is 3 points for that week, however you can do more than...
- Fri Oct 12, 2018 1:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: AAP PLF Sessions, Can't Enroll
- Replies: 1
- Views: 217
Re: AAP PLF Sessions, Can't Enroll
Are you in AAP? I think you should go to Campbell hall and speak to a peer counselor they should be able to help you enroll.
- Fri Oct 12, 2018 1:09 pm
- Forum: Empirical & Molecular Formulas
- Topic: Empirical & Molecular Formulas
- Replies: 11
- Views: 1566
Re: Empirical & Molecular Formulas
Yes. If you divide the given molar mass and the molar mass you get by solving the question and the result is 1, then most likely the empirical formulas and the molecular formula will be the same.
- Tue Oct 09, 2018 10:23 pm
- Forum: Limiting Reactant Calculations
- Topic: Percent Yield [ENDORSED]
- Replies: 13
- Views: 2894
Re: Percent Yield [ENDORSED]
Actual yield is what you actually get from the reaction while theoretical yield is what you hope/expect to get from the reaction.
- Fri Oct 05, 2018 1:34 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 432178
Re: Rusty on High School Chem [ENDORSED]
I would definitely watch the modules and do the post-assessment practice questions as they have helped me. I also go to different websites for chem videos on basic topics I need help with as well as practice exams online.
- Fri Oct 05, 2018 1:26 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8594
Re: How does grading for discussion posts work?
Does anyone know when (if?) the audio-visual focus topics are due? I switched into this class a few days ago and I'm a little confused. Thank you!! They aren't due. It's to help you prepare for lecture and go over the material. It was very helpful for me because I haven't taken chem since my junior...
- Fri Oct 05, 2018 1:15 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8594
Re: How does grading for discussion posts work?
aisteles1G wrote:I also had a question on this, by what day/time is the cut off for each week??
You have to post by Sunday 11:59 to get full points for the week because at 12 the system resets and its a different week
- Fri Oct 05, 2018 1:07 pm
- Forum: Balancing Chemical Reactions
- Topic: How To....
- Replies: 16
- Views: 2633
Re: How To....
When balancing equations, I usually just list how much of each element is present (a technique I learned in High school), from there I just balance the equation from left to right taking into consideration the number of elements on each side.