Search found 35 matches

by Jack Kettering 2H
Sun Nov 22, 2020 10:11 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 173
Views: 34039

Re: Final Jitters

I just take deep breaths and remind myself of how much I am well prepared to make myself more confident going into big tests like the final :)
by Jack Kettering 2H
Sun Nov 22, 2020 10:08 pm
Forum: Ionic & Covalent Bonds
Topic: Polar/ Nonpolar
Replies: 18
Views: 68

Re: Polar/ Nonpolar

I find that shape is the easiest way to tell whether or not a molecule is polar or not so the answer to your question is yes!
by Jack Kettering 2H
Sun Nov 22, 2020 10:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 Scores
Replies: 28
Views: 114

Re: Midterm 2 Scores

Hopefully sometime later this week but its possible the scores will be delayed due to the thanksgiving holiday but I hope not :)
by Jack Kettering 2H
Sun Nov 22, 2020 10:06 pm
Forum: Administrative Questions and Class Announcements
Topic: Thanksgiving
Replies: 26
Views: 85

Re: Thanksgiving

I believe we had a prerecorded lecture posted on veteran's day so I am assuming the same will happen for the Friday after thanksgiving.
by Jack Kettering 2H
Sun Nov 22, 2020 10:04 pm
Forum: Administrative Questions and Class Announcements
Topic: 14B Enrollment [ENDORSED]
Replies: 11
Views: 288

Re: 14B Enrollment [ENDORSED]

All of my other "online-recorded" classes have live lectures unlike Lavelle's class. I'm fairly sure that all the asynchronous style classes are listed as such. Hope that helps :)
by Jack Kettering 2H
Sun Nov 15, 2020 8:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2
Replies: 23
Views: 72

Re: Midterm 2

Although it is more questions, the questions are much shorter and less time-intensive therefore we won't need more time.
by Jack Kettering 2H
Sun Nov 15, 2020 8:22 pm
Forum: Lewis Structures
Topic: Drawing Lewis Structures on Midterm
Replies: 31
Views: 114

Re: Drawing Lewis Structures on Midterm

Yes we will be expected to select the most stable lewis structure representation based on formal charge.
by Jack Kettering 2H
Sun Nov 15, 2020 8:21 pm
Forum: Ionic & Covalent Bonds
Topic: Resonance Structures
Replies: 5
Views: 23

Re: Resonance Structures

The hybrid model is the actual observed model we see in experiments when each bond length is equivalent due to delocalized electrons. This represents a slight flaw in the way we draw lewis structures.
by Jack Kettering 2H
Sun Nov 15, 2020 8:17 pm
Forum: Dipole Moments
Topic: Sapling W 5/6 #17
Replies: 10
Views: 55

Re: Sapling W 5/6 #17

The answers are BCl3, Br2, and C2H6. This is due to the fact that the dipoles cancel out in each molecule, so there is no net dipole moment in each, which means that there are no dipole-dipole interactions, only dispersion forces.
by Jack Kettering 2H
Sun Nov 15, 2020 8:14 pm
Forum: Lewis Structures
Topic: Expanded Octets
Replies: 7
Views: 21

Re: Expanded Octets

These atoms are in period 3 and beyond and therefore have a d subshell to accommodate an expanded octet.
by Jack Kettering 2H
Sun Nov 08, 2020 11:45 pm
Forum: Sigma & Pi Bonds
Topic: pi bonds
Replies: 8
Views: 205

Re: pi bonds

Yes, you are correct. A triple bond has a single sigma and two pi :)
by Jack Kettering 2H
Sun Nov 08, 2020 11:44 pm
Forum: Quantum Numbers and The H-Atom
Topic: Are there subshells past f?
Replies: 28
Views: 102

Re: Are there subshells past f?

I believe that in theory there are subshells past f as the mathematical models allow for such a thing but we do not have any known elements identified that have such a property
by Jack Kettering 2H
Sun Nov 08, 2020 11:43 pm
Forum: Student Social/Study Group
Topic: Test Anxiety
Replies: 62
Views: 226

Re: Test Anxiety

To combat test anxiety I recommend taking a bunch of deep breaths before a test and I like to remind myself of all the preparation I’ve done to remind myself that I’ve got this test in the bag :)
by Jack Kettering 2H
Sun Nov 08, 2020 11:42 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Why do we use formal charge?
Replies: 14
Views: 78

Re: Why do we use formal charge?

We use formal charge to determine the best Lewis for structure for a molecule as we are trying to create a structure with the best balance and stability which is measured through formal charge.
by Jack Kettering 2H
Sun Nov 08, 2020 11:41 pm
Forum: Dipole Moments
Topic: Hydrogen bonds
Replies: 9
Views: 198

Re: Hydrogen bonds

You count hydrogen bonds by counting the amount of bonds you see between H and the elements F, O, and N.
by Jack Kettering 2H
Sun Nov 01, 2020 9:29 pm
Forum: Ionic & Covalent Bonds
Topic: hydrogen
Replies: 19
Views: 192

Re: hydrogen

For there to be a hydrogen bond the hydrogen must be bonded to either Nitrogen, Oxygen, or Fluorine :)
by Jack Kettering 2H
Sun Nov 01, 2020 9:27 pm
Forum: Properties of Light
Topic: How to remember what v is in equations
Replies: 46
Views: 136

Re: How to remember what v is in equations

It is very confusing I agree but if you look closely on the lecture slides as well as the formula sheet we are given the v for frequency is actually italicized and represents a Greek letter whereas the normal English v refers to velocity
by Jack Kettering 2H
Sun Nov 01, 2020 9:25 pm
Forum: DeBroglie Equation
Topic: When to Use De Broglie
Replies: 16
Views: 94

Re: When to Use De Broglie

Yes when the question is referring to an electron you use the De Broglie Equation because the electron has mass and is not traveling at the speed of light like a photon would be doing so you cannot use the equation with the constant c.
by Jack Kettering 2H
Sun Nov 01, 2020 9:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm scores
Replies: 15
Views: 51

Re: Midterm scores

My guess would be since everyone has finished taking the midterm with the makeup being held Friday we will receive our score sometime this week. Hoping its sooner than later :)
by Jack Kettering 2H
Sun Nov 01, 2020 9:21 pm
Forum: Trends in The Periodic Table
Topic: Radius trends for elements like Carbon
Replies: 4
Views: 19

Re: Radius trends for elements like Carbon

Since carbon has 4 valence electrons it tends to not like to gain or lose electrons and therefore does not really ever form ionic bonds with other elements however it rather forms covalent bonds.
by Jack Kettering 2H
Sun Oct 25, 2020 9:23 pm
Forum: Photoelectric Effect
Topic: Mass of atoms
Replies: 18
Views: 91

Re: Mass of atoms

Masses should always be in SI units which in the case of mass is kilograms. As for your second question, I believe all constants like that will be given to us during exams so no need for memorization.
by Jack Kettering 2H
Sun Oct 25, 2020 9:21 pm
Forum: Balancing Chemical Reactions
Topic: Periodic Table
Replies: 50
Views: 402

Re: Periodic Table

We definitely will not be needing to memorize anything regarding the periodic table as we will be able to use one during exams :)
by Jack Kettering 2H
Sun Oct 25, 2020 9:19 pm
Forum: Properties of Light
Topic: Midterm
Replies: 42
Views: 368

Re: Midterm

We will be taking the midterm on the respondus lockdown browser during our next discussion section with our TA proctoring and watching our work space therefore I believe it is a closed note test. It is multiple choice however so that is good :)
by Jack Kettering 2H
Sun Oct 25, 2020 9:18 pm
Forum: DeBroglie Equation
Topic: n1 and n2
Replies: 15
Views: 49

Re: n1 and n2

N1 is the final and N2 is the initial energy level of the electron. I find this very confusing so I would suggest memorizing the equation using nf and ni to denote final and initial positions of the electron :)
by Jack Kettering 2H
Sun Oct 25, 2020 9:16 pm
Forum: DeBroglie Equation
Topic: Derivation of Equations on Midterm?
Replies: 17
Views: 80

Re: Derivation of Equations on Midterm?

We definitely will not need to be able to show derivations on the test, especially with it being multiple choice. I believe he goes over derivations in lecture just to give us a better understanding of each equation and where it comes from :)
by Jack Kettering 2H
Sun Oct 18, 2020 9:44 pm
Forum: Student Social/Study Group
Topic: How are you studying?
Replies: 196
Views: 815

Re: How are you studying?

I’m studying by just looking over lecture notes every night to reinforce the material as well as do as many practice problems as possible :)
by Jack Kettering 2H
Sun Oct 18, 2020 9:43 pm
Forum: *Black Body Radiation
Topic: Black Body Radiation
Replies: 13
Views: 65

Re: Black Body Radiation

I don’t think we need to know anything about black body radiation, I believe the discussion with regards to black body radiation was just extraneous material.
by Jack Kettering 2H
Sun Oct 18, 2020 9:42 pm
Forum: Student Social/Study Group
Topic: Midterm
Replies: 2
Views: 16

Re: Midterm

The midterm includes all the material taught in lectures through week 3 :)
by Jack Kettering 2H
Sun Oct 18, 2020 9:41 pm
Forum: Properties of Electrons
Topic: protons and electrons
Replies: 33
Views: 174

Re: protons and electrons

Protons have a mass of 1 AMU whereas electrons are considered to have a negligible mass.
by Jack Kettering 2H
Sun Oct 18, 2020 9:41 pm
Forum: Einstein Equation
Topic: unexpected outcome of wave-particle experiment
Replies: 8
Views: 48

Re: unexpected outcome of wave-particle experiment

The unexpected outcome was the fact that even low frequency waves at very high intensities did not cause an electron to be released from the metal.
by Jack Kettering 2H
Sun Oct 11, 2020 7:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 75
Views: 72406

Re: Tutoring? [ENDORSED]

I wouldn’t pay for a tutor when Dr Lavelle has provided so many free resources for those struggling with their chemistry. If after using those resources you still feel bad then I would look into a tutor.
by Jack Kettering 2H
Sun Oct 11, 2020 7:18 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 200
Views: 140742

Re: Rusty on High School Chem [ENDORSED]

I would suggest utilizing the wealth of resources Dr Lavelle has such as step up sessions and office hours if you are not feeling confident on your chemistry :)
by Jack Kettering 2H
Sun Oct 11, 2020 7:11 pm
Forum: SI Units, Unit Conversions
Topic: Textbook
Replies: 22
Views: 164

Re: Textbook

I’d suggest utilizing the free trial Dr Lavelle has setup to access sapling for the time being.
by Jack Kettering 2H
Sun Oct 11, 2020 7:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Office hours vs. step up sessions
Replies: 1
Views: 13

Re: Office hours vs. step up sessions

I believe Dr. Lavelle said that step up sessions are for people that are most struggling whereas office hours are for people with a bigger grasp on the material.
by Jack Kettering 2H
Sun Oct 11, 2020 7:08 pm
Forum: Administrative Questions and Class Announcements
Topic: Is there a way to turn in homework without purchasing sapling
Replies: 2
Views: 17

Re: Is there a way to turn in homework without purchasing sapling

I know Lavelle has set up a free trial period for people having troubles with getting their codes but I don’t believe there’s a way of getting around not having a code :(

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