Search found 38 matches

by ZevMarx-Kahn3C
Sun Nov 17, 2019 6:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: single, double, and triple bonds
Replies: 6
Views: 18

Re: single, double, and triple bonds

Will double and triple bonds repel any more than the single bonds (enough to change the angles at all)?
by ZevMarx-Kahn3C
Sun Nov 17, 2019 6:36 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Prediction of Angles
Replies: 4
Views: 14

Re: Prediction of Angles

Are we meant to just memorize the angles for the shapes we've learned?
by ZevMarx-Kahn3C
Sun Nov 17, 2019 6:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018727

Re: Post All Chemistry Jokes Here

Wish I'd seen this one when we were still doing quantum...
by ZevMarx-Kahn3C
Sun Nov 17, 2019 6:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018727

Re: Post All Chemistry Jokes Here

Why did the attacking army use acid?
To neutralize the enemy’s base.
by ZevMarx-Kahn3C
Sun Nov 17, 2019 6:29 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018727

Re: Post All Chemistry Jokes Here

What kind of fish is salty?

2 Na!
by ZevMarx-Kahn3C
Sun Nov 10, 2019 10:49 pm
Forum: Octet Exceptions
Topic: Limit to expanded octet
Replies: 7
Views: 46

Re: Limit to expanded octet

What if the element also has the f-orbital available to it?
by ZevMarx-Kahn3C
Sun Nov 10, 2019 10:44 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polarizability and polarizing power
Replies: 4
Views: 13

Re: polarizability and polarizing power

Are they linearly inversely related?
by ZevMarx-Kahn3C
Sun Nov 10, 2019 10:42 pm
Forum: Dipole Moments
Topic: Hydrogen Bonding
Replies: 6
Views: 13

Re: Hydrogen Bonding

Could a bond between something lower down in the same group as H form an intramolecular bond stronger than a hydrogen-bond? B/c of lower electronegativity?
by ZevMarx-Kahn3C
Tue Nov 05, 2019 11:22 pm
Forum: Lewis Structures
Topic: Common polyatomic ions
Replies: 2
Views: 19

Re: Common polyatomic ions

Thank you, that chart is super helpful!
by ZevMarx-Kahn3C
Tue Nov 05, 2019 10:38 pm
Forum: Lewis Structures
Topic: Common polyatomic ions
Replies: 2
Views: 19

Common polyatomic ions

For which common polyatomic ions will we have to know the formula (and vice versa) on the midterm? Will they all be given?
by ZevMarx-Kahn3C
Sun Nov 03, 2019 4:39 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: What are the octet exceptions?
Replies: 11
Views: 54

Re: What are the octet exceptions?

n = 3 energy levels, or elements after P, have access to an empty d-orbital. Because of this accessible d-orbital, the elements are exceptions to the octet rule. Elements in group 13 (column with B, Al, etc.) are also exceptions with 3 pairs of e-, rather than an octet. Why are these group 13 eleme...
by ZevMarx-Kahn3C
Sun Nov 03, 2019 4:38 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Degenerate orbitals
Replies: 4
Views: 27

Re: Degenerate orbitals

Is this something we need to know for the midterm? I don't seem to remember it having been mentioned in lecture...
by ZevMarx-Kahn3C
Sun Nov 03, 2019 4:37 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Coulombic potential energy
Replies: 2
Views: 20

Re: Coulombic potential energy

Is this something we need to know for the midterm?
by ZevMarx-Kahn3C
Sun Nov 03, 2019 4:36 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Exceptions in electronic configurations?
Replies: 3
Views: 21

Re: Exceptions in electronic configurations?

Are these the only exceptions we need to know?
by ZevMarx-Kahn3C
Sun Nov 03, 2019 4:35 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: paul and hundd rules
Replies: 4
Views: 25

Re: paul and hundd rules

Is the Aufbau principle also called the "building up" principle? How would I use it in context?
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:45 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Finding Most Stable Structure
Replies: 9
Views: 52

Re: Finding Most Stable Structure

How do we know when we're dealing with the most stable version? Are naturally occurring molecules always the most stable versions of themselves?
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:43 pm
Forum: Octet Exceptions
Topic: Determining Exceptions
Replies: 3
Views: 26

Re: Determining Exceptions

Thank you guys for explaining this, it's so helpful!
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:42 pm
Forum: Octet Exceptions
Topic: 8 valence electrons
Replies: 3
Views: 20

Re: 8 valence electrons

Dr. Lavelle mentioned the octet guideline only being applicable to a certain array of atoms...what are these atoms? Is it ones without d-orbitals?
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:41 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Expanded Valence Shells
Replies: 5
Views: 26

Re: Expanded Valence Shells

Could they hypothetically have so many bonds that this d orbital is filled?
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:39 pm
Forum: Student Social/Study Group
Topic: Ionization Energy vs. e- Affinity
Replies: 3
Views: 21

Re: Ionization Energy vs. e- Affinity

Is there any relationship between whether something is a metal and its e- affinity?
by ZevMarx-Kahn3C
Sun Oct 27, 2019 11:37 pm
Forum: Octet Exceptions
Topic: Reasoning behind the exceptions
Replies: 3
Views: 36

Re: Reasoning behind the exceptions

Are there any electrons in these 3d orbitals? Or do they just exist because the third energy state exists?
by ZevMarx-Kahn3C
Sun Oct 20, 2019 11:25 pm
Forum: Quantum Numbers and The H-Atom
Topic: electron spin
Replies: 4
Views: 27

Re: electron spin

How much conceptual knowledge of electron spin will we need for the midterm in this class?
by ZevMarx-Kahn3C
Sun Oct 20, 2019 11:24 pm
Forum: DeBroglie Equation
Topic: Photon Equation
Replies: 4
Views: 44

Re: Photon Equation

My TA also said that this is a big topic of debate and controversy in the field, so if you/we don't understand it, I think we'll be fine at least for this course!
by ZevMarx-Kahn3C
Sun Oct 20, 2019 3:30 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisengberg Uncertainty Equation Meaning
Replies: 7
Views: 35

Re: Heisengberg Uncertainty Equation Meaning

Are there any textbook practice problems that you guys would recommend in particular for these concepts?
by ZevMarx-Kahn3C
Sun Oct 20, 2019 3:28 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 52
Views: 274

Re: Advice for studying

Do you guys know if there's anywhere that Dr. Lavelle lists the exact stuff he's gonna go over in lecture? I like to read the textbook sections beforehand but I always end up reading stuff that he doesn't end up expecting us to know, and I just get confused. Thanks!
by ZevMarx-Kahn3C
Sun Oct 20, 2019 11:20 am
Forum: *Particle in a Box
Topic: Particle in A box
Replies: 7
Views: 68

Re: Particle in A box

Can the particle in a box experiment be compared to the physics of acoustics and sound waves within a chamber/tube?
by ZevMarx-Kahn3C
Sun Oct 20, 2019 11:16 am
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 45
Views: 36913

Re: How to find my posts

This is great to know, thank you guys!
by ZevMarx-Kahn3C
Fri Oct 11, 2019 10:56 pm
Forum: Trends in The Periodic Table
Topic: Element Names
Replies: 8
Views: 416

Re: Element Names

Is that periodic table color-coded with the types of elements like how it is in the front of our textbook?
by ZevMarx-Kahn3C
Fri Oct 11, 2019 10:55 pm
Forum: Properties of Light
Topic: Relationship between lambda and nu
Replies: 5
Views: 57

Re: Relationship between lambda and nu

How does the speed of light change when not in a vacuum?
by ZevMarx-Kahn3C
Fri Oct 11, 2019 10:53 pm
Forum: Properties of Light
Topic: Wavelength
Replies: 4
Views: 24

Re: Wavelength

Is it possible for interference to be both constructive and destructive (at different times) with the two waves staying the same?
by ZevMarx-Kahn3C
Fri Oct 11, 2019 10:52 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018727

Re: Post All Chemistry Jokes Here

A neutron walked into a bar and asked how much for a drink. The bartender replied, "for you, no charge."
by ZevMarx-Kahn3C
Fri Oct 11, 2019 10:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018727

Re: Post All Chemistry Jokes Here

The noble gases walk into a bar. No one reacts.
by ZevMarx-Kahn3C
Mon Oct 07, 2019 7:35 pm
Forum: Empirical & Molecular Formulas
Topic: Polyatomic Ions/Naming Compounds
Replies: 6
Views: 94

Re: Polyatomic Ions/Naming Compounds

Do we have to know this stuff for the first test?
by ZevMarx-Kahn3C
Fri Oct 04, 2019 1:06 am
Forum: SI Units, Unit Conversions
Topic: Etext Access for Chem Book
Replies: 3
Views: 44

Re: Etext Access for Chem Book

Ashley Fang 3J wrote:Hmm I'm not sure about your extext access issue in particular but if you want there's also a free pdf version you could download

https://drive.google.com/file/d/1QBq9rF ... p=drivesdk


Thanks a million! This is super helpful.
by ZevMarx-Kahn3C
Fri Oct 04, 2019 1:05 am
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 10367

Re: All students read this sig fig post [ENDORSED]

How do you deal with significant figures when you have exact values (e.g., exactly 1:2 ratio of molecules in a reaction)? Do we treat the exact value as having infinite sig figs?
by ZevMarx-Kahn3C
Fri Oct 04, 2019 12:59 am
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent
Replies: 29
Views: 272

Re: Ionic vs Covalent

405335722 wrote:covalent network are the strongest (ex. diamond and graphite) are stronger than ionic however covalent bonds themselves are usually weaker than ionic bonds.

How much of knowledge like this will be required for the final in this class?
by ZevMarx-Kahn3C
Wed Oct 02, 2019 11:57 pm
Forum: SI Units, Unit Conversions
Topic: Diagnostic test for chem 17 vs 14A
Replies: 5
Views: 57

Re: Diagnostic test for chem 17 vs 14A

Alright, thank you! Excuse me while I try to go re-learn all of high school chemistry.
by ZevMarx-Kahn3C
Wed Oct 02, 2019 11:03 pm
Forum: SI Units, Unit Conversions
Topic: Diagnostic test for chem 17 vs 14A
Replies: 5
Views: 57

Diagnostic test for chem 17 vs 14A

Hi all! I just took the diagnostic test Dr. Lavelle sent out to see whether I'm more suited to the Chem 14A class in which I'm currently enrolled or perhaps Chem 17 because I'm VERY rusty on high school chem. But, all it said when I finished it under "Overall Feedback" was "This compl...

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