Search found 43 matches

by Kendall_Dewey_2D
Tue Nov 24, 2020 8:36 pm
Forum: Lewis Structures
Topic: Octet Rule
Replies: 13
Views: 43

Re: Octet Rule

The octet rule is broken when an atom has more than 8 valence electrons filling the outer orbital. Calculating the total electrons involved in a molecule and making sure to include the formal charge of each atom can help with this process. We can't forget about the exceptions to the octet rule, eith...
by Kendall_Dewey_2D
Tue Nov 24, 2020 8:21 pm
Forum: Student Social/Study Group
Topic: Big Sad: Midterm 2
Replies: 65
Views: 397

Re: Big Sad: Midterm 2

I feel the same way- We just have to try our best and get as many points as we can!! Good luck!
by Kendall_Dewey_2D
Sat Nov 21, 2020 1:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Nomenclature / Polyatomic Ions
Replies: 3
Views: 31

Re: Nomenclature / Polyatomic Ions

This link has a chart of common polyatomic ions I found to be helpful! http://www.chemistry.wustl.edu/~edudev/ ... /ions.html
by Kendall_Dewey_2D
Sat Nov 21, 2020 1:12 pm
Forum: Administrative Questions and Class Announcements
Topic: 14B and 14BL
Replies: 6
Views: 48

Re: 14B and 14BL

I think I will be taking 14B in winter and BL in spring, as I personally want to have a stronger foundation first before delving into lab stuff, but I've heard that either way you do it is fine!
by Kendall_Dewey_2D
Sat Nov 21, 2020 1:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 Grades
Replies: 6
Views: 104

Re: Midterm 2 Grades

I heard next week, as well!
by Kendall_Dewey_2D
Sat Nov 21, 2020 1:02 pm
Forum: Resonance Structures
Topic: Valence Electrons
Replies: 28
Views: 91

Re: Valence Electrons

The number of valence electrons can be quickly found depending on which group that the element is in on the periodic table. So, atoms in the 1st group have 1 valence electron, while atoms in the 8th group (noble gases) have 8, and don't forget to exclude the d block when you count the group!
by Kendall_Dewey_2D
Sat Nov 21, 2020 1:00 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Importance of anions and cations
Replies: 15
Views: 47

Re: Importance of anions and cations

Cations are positively charged and anions are negatively charged. I remember this personally because to me anion sounds like onion and I have had a "negative" experience with onions. Weird way to remember, but it works for me!
by Kendall_Dewey_2D
Sun Nov 15, 2020 3:39 pm
Forum: Student Social/Study Group
Topic: Midterm 2
Replies: 28
Views: 103

Re: Midterm 2

I think the textbook problems are really helpful, especially since they usually seem more challenging - it makes the homework easier to comprehend as well!
by Kendall_Dewey_2D
Sun Nov 15, 2020 3:37 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: is it polar
Replies: 6
Views: 46

Re: is it polar

I believe the larger the difference in electronegativity, the more electronegative the bond is, and for it to be polar, this difference must also be large.
by Kendall_Dewey_2D
Sun Nov 15, 2020 3:35 pm
Forum: Student Social/Study Group
Topic: Post Midterm Blues
Replies: 71
Views: 444

Re: Post Midterm Blues

I felt the same way! I always feel better when I remember I've tried my best, even if the outcome isn't always what I want. We got it for this next midterm!
by Kendall_Dewey_2D
Sun Nov 15, 2020 3:31 pm
Forum: Trends in The Periodic Table
Topic: Trends in Periodic Table Tips
Replies: 11
Views: 56

Re: Trends in Periodic Table Tips

This site has a really helpful graphic when it comes to memorizing the trends https://sciencenotes.org/periodic-table-trends/
by Kendall_Dewey_2D
Sun Nov 15, 2020 3:29 pm
Forum: Student Social/Study Group
Topic: Online textbook answer key
Replies: 5
Views: 124

Re: Online textbook answer key

Definitely recommend downloading! If not, sometimes it helps to restart the browser you tried to open it in.
by Kendall_Dewey_2D
Sun Nov 08, 2020 11:56 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: The orbitals
Replies: 8
Views: 42

Re: The orbitals

This Socratic link gives a clear description of orbitals and what they represent: https://socratic.org/chemistry/the-elec ... -spd-and-f

It does a good job of breaking down the different s,p,d,f orbitals and explains the numbers as well!
by Kendall_Dewey_2D
Sun Nov 08, 2020 11:53 am
Forum: Photoelectric Effect
Topic: Sapling Problem #6
Replies: 7
Views: 90

Re: Sapling Problem #6

I was stuck on this question too- I found that it is easiest to solve by thinking of the number of spectral lines as equal to the number of possible transitions from n=7 to n=1. So, finding the wavelength range is the wavelength from to the transition from n=7 to n=6 and then the wavelength from to ...
by Kendall_Dewey_2D
Sun Nov 08, 2020 11:50 am
Forum: Significant Figures
Topic: How to use Scientific Notation
Replies: 9
Views: 66

Re: How to use Scientific Notation

This link has some super clear and concise examples on when and how to use scientific notation that I found to be helpful, as it can be easy to be confused on this topic! https://calcworkshop.com/exponents/scientific-notation/
by Kendall_Dewey_2D
Sun Nov 08, 2020 11:46 am
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 76
Views: 49960

Re: Chemistry News

https://scitechdaily.com/scientists-des ... roperties/

This is a really neat article I read this morning on the development of a new type of lightweight magnet with cool applications, particularly in regard to chemistry.
by Kendall_Dewey_2D
Sun Nov 08, 2020 11:42 am
Forum: Student Social/Study Group
Topic: Studying From Home
Replies: 81
Views: 262

Re: Studying From Home

One way I find it easier to stay focused at home is by setting a certain amount of time to do work, and designating specific breaks in between! It’s easier for me to concentrate for 30 minutes or whatever the time may be when I know I can have a 15 minute break afterward! :)
by Kendall_Dewey_2D
Sun Nov 01, 2020 7:12 pm
Forum: DeBroglie Equation
Topic: Sapling Homework - electron affinity
Replies: 9
Views: 93

Re: Sapling Homework - electron affinity

These explanations helped so much - I was stuck on this one for a while. Thanks guys!
by Kendall_Dewey_2D
Sun Nov 01, 2020 2:46 pm
Forum: Student Social/Study Group
Topic: Favorite TV shows
Replies: 135
Views: 438

Re: Favorite TV shows

Grey's Anatomy is such a classic! You should also try Hawaii 5-O - never gets old
by Kendall_Dewey_2D
Sun Nov 01, 2020 2:44 pm
Forum: Trends in The Periodic Table
Topic: Oxygen and Ionization Energy
Replies: 9
Views: 39

Re: Oxygen and Ionization Energy

This Kahn Academy video is one I found to be interesting and informative in regard to this topic. https://www.khanacademy.org/science/ap- ... ion-energy
by Kendall_Dewey_2D
Sun Nov 01, 2020 2:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Participation Points [ENDORSED]
Replies: 62
Views: 891

Re: Participation Points [ENDORSED]

Thank you to all who clarified this! - Was also wondering how to check, so super helpful!
by Kendall_Dewey_2D
Sun Nov 01, 2020 2:32 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic v. Covalent
Replies: 7
Views: 74

Re: Ionic v. Covalent

One main difference comes from how equally the electrons are shared between atoms in the bond. Electrons are shared between atoms in a covalent bond and donated to other atoms in the ionic bond. https://sciencenotes.org/ionic-vs-covalent-bonds/ This link offers a clear explanation :)
by Kendall_Dewey_2D
Sun Nov 01, 2020 2:28 pm
Forum: Student Social/Study Group
Topic: How to relax
Replies: 97
Views: 369

Re: How to relax

I love to read a new book or an old favorite that takes my mind off of school or anything stressful! Getting exercise also helps me relax.
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:30 pm
Forum: Quantum Numbers and The H-Atom
Topic: Degenerate 1 electron systems
Replies: 3
Views: 37

Re: Degenerate 1 electron systems

Like the other posts say, degeneracy means that you have multiple orbitals with the same energy level, so with the one electron system, there are no shielding effects - therefore, all of the shells are energy-degenerate.
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:26 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Sapling Question 16
Replies: 3
Views: 33

Re: Sapling Question 16

I was also confused on this question - the explanation posted helps a lot. Thanks!!
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:24 pm
Forum: *Black Body Radiation
Topic: Midterm
Replies: 14
Views: 207

Re: Midterm

While black body radiation won't be on the midterm, this link has some neat information on the subject if you are interested! http://galileo.phys.virginia.edu/classe ... ation.html
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:20 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 76
Views: 49960

Re: Chemistry News

idella 1F wrote:Something interesting I read about this infrared molecule scientists discovered! :)
https://scitechdaily.com/near-infrared- ... -strategy/


Thank you for sharing this - super interesting to read!
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:19 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 76
Views: 49960

Re: Chemistry News

Here's a really cool article I found on a new discovery that combines tech with chemistry! https://www.cnbc.com/2020/10/24/how-a-d ... ustry.html
by Kendall_Dewey_2D
Sat Oct 24, 2020 11:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 188
Views: 14294

Re: Advice from a Medical Student - Part II [ENDORSED]

Thank you so much for sharing this! It was really helpful and inspiring to read!
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:39 pm
Forum: Properties of Light
Topic: Sapling homework question 5
Replies: 3
Views: 39

Re: Sapling homework question 5

https://socratic.org/questions/how-do-y ... of-photons I found this link helpful, as well!
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:36 pm
Forum: Student Social/Study Group
Topic: Discussion 2D GroupMe
Replies: 4
Views: 25

Re: Discussion 2D GroupMe

Hey Abby! It's just weeks 1-3! I believe that's up til question 21 in Sapling hw :)
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:34 pm
Forum: Student Social/Study Group
Topic: Midterm - extra review
Replies: 2
Views: 21

Re: Midterm - extra review

Ahh awesome! Thanks, Abby! Miss you too - I'll text you asap.
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:21 pm
Forum: Student Social/Study Group
Topic: Midterm - extra review
Replies: 2
Views: 21

Midterm - extra review

Hi guys,

Would anyone be up for doing an extra review for the midterm via Zoom sometime this week?

Thanks!
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:16 pm
Forum: Student Social/Study Group
Topic: Discussion 2D GroupMe
Replies: 4
Views: 25

Re: Discussion 2D GroupMe

That would be awesome! Thank you!
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:14 pm
Forum: Student Social/Study Group
Topic: Study Tips
Replies: 8
Views: 39

Re: Study Tips

Textbook questions are super helpful! The other workshop sessions are great extra practice, too.
by Kendall_Dewey_2D
Sun Oct 18, 2020 6:09 pm
Forum: Balancing Chemical Reactions
Topic: Naming compounds
Replies: 21
Views: 150

Re: Naming compounds

I think Dr. Lavelle said he will provide a sheet of formulas/compounds we need for any problems on tests!
by Kendall_Dewey_2D
Sun Oct 18, 2020 5:51 pm
Forum: Empirical & Molecular Formulas
Topic: Ion symbols
Replies: 4
Views: 57

Re: Ion symbols

https://www.youtube.com/watch?v=H5S4TRAzXhQ I found this video helpful in exploring this topic!
by Kendall_Dewey_2D
Sat Oct 10, 2020 8:11 pm
Forum: Student Social/Study Group
Topic: Discussion 2D GroupMe
Replies: 4
Views: 25

Discussion 2D GroupMe

I apologize if this question has been asked before, but is there a specific GroupMe for discussion 2D for Chem 14A? Thank you so much!
by Kendall_Dewey_2D
Sat Oct 10, 2020 8:08 pm
Forum: Limiting Reactant Calculations
Topic: Limiting reactants in all chemical rxns?
Replies: 18
Views: 130

Re: Limiting reactants in all chemical rxns?

On this same topic, is there a maximum amount of limiting reactants an equation can have? Thanks! It is highly unlikely that there will be more than one limiting reactant since this would require that the moles of two or more different reactants are exactly equal and completely react with each othe...
by Kendall_Dewey_2D
Sat Oct 10, 2020 8:01 pm
Forum: Empirical & Molecular Formulas
Topic: Ratios for empircal formulas
Replies: 6
Views: 59

Re: Ratios for empircal formulas

I was also confused by this topic but found this link to be helpful on determining ratios! https://www.chem.tamu.edu/class/fyp/sto ... irical.htm
by Kendall_Dewey_2D
Sat Oct 10, 2020 7:57 pm
Forum: Limiting Reactant Calculations
Topic: Limiting reactants in all chemical rxns?
Replies: 18
Views: 130

Re: Limiting reactants in all chemical rxns?

On this same topic, is there a maximum amount of limiting reactants an equation can have?

Thanks!
by Kendall_Dewey_2D
Sat Oct 10, 2020 4:23 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Avogadro's #
Replies: 31
Views: 298

Re: Avogadro's #

I have found this resource to be helpful in regard to when to use Avogadro's #! https://www.chemteam.info/Mole/Avogadro ... lcsII.html

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