Search found 47 matches

by Lilly Catarozoli 1B
Sat Nov 28, 2020 4:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Axial vs Equatorial
Replies: 4
Views: 28

Re: Axial vs Equatorial

Axial atoms form a 180-degree angle. They are vertical from each other (like above or below each other). Equatorial atoms are along the same equatorial plane. Dr. Lavelle went over some diagrams that helped me understand this!
by Lilly Catarozoli 1B
Sat Nov 28, 2020 3:59 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling Weeks 7-8 #16
Replies: 6
Views: 30

Re: Sapling Weeks 7-8 #16

Delocalized pi bonds correlate to the structure having resonance with double or triple bonds!
by Lilly Catarozoli 1B
Sat Nov 28, 2020 3:57 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Delocalized Pi Bond
Replies: 7
Views: 30

Re: Delocalized Pi Bond

I think delocalized correlates to if the structure has resonance or not. If it has resonance, then the electrons would be delocalized because they don't have one singular place.
by Lilly Catarozoli 1B
Sat Nov 28, 2020 3:54 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shape Names
Replies: 50
Views: 178

Re: Shape Names

Bent and angular are the same thing!
by Lilly Catarozoli 1B
Sat Nov 28, 2020 3:53 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polarity and Shape
Replies: 13
Views: 33

Re: Polarity and Shape

I think just drawing them and seeing if the dipoles cancel out is the easiest!
by Lilly Catarozoli 1B
Fri Nov 20, 2020 11:43 am
Forum: Octet Exceptions
Topic: Octet Rule Exceptions
Replies: 20
Views: 143

Re: Octet Rule Exceptions

P, S, and Cl, are elements that can have an expanded octet.
by Lilly Catarozoli 1B
Fri Nov 20, 2020 11:41 am
Forum: Hybridization
Topic: Energy level of sp3
Replies: 2
Views: 23

Re: Energy level of sp3

There is a crash course video that has good visuals and helped me understand. Hope this helps!
by Lilly Catarozoli 1B
Fri Nov 20, 2020 11:37 am
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: hydrogen bonding
Replies: 7
Views: 43

Re: hydrogen bonding

H bonding can only apply if there is a large difference in electronegativity, which is why it must be bonded to N O or F.
by Lilly Catarozoli 1B
Fri Nov 20, 2020 11:30 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizability vs Electronegativity
Replies: 3
Views: 32

Re: Polarizability vs Electronegativity

Yes, because polarizability is the ability of the electrons to be distorted and electronegativity is about gaining and losing electrons!
by Lilly Catarozoli 1B
Sun Nov 15, 2020 3:34 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge Textbook Question
Replies: 3
Views: 16

Formal Charge Textbook Question

For question 2B #23, the textbook answer says the structure to the right is the more likely. But, the structures on the right are the ones that have formal charges, while the structures on the left all have 0 formal charges. What am I missing? Thanks!
by Lilly Catarozoli 1B
Sat Nov 14, 2020 6:16 pm
Forum: Student Social/Study Group
Topic: Midterm 2
Replies: 22
Views: 79

Re: Midterm 2

I think the textbook problems are the most helpful!
by Lilly Catarozoli 1B
Fri Nov 13, 2020 11:15 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration Confused
Replies: 3
Views: 25

Re: Electron Configuration Confused

The way it fills matches up with the Aufbau diagram that I believe you are talking about, but when we write out electron configurations for this class, we would always go by increasing n levels. So, for example, even though 4s would fill before 3d, for a certain metal, lets say Ni, we would still w...
by Lilly Catarozoli 1B
Thu Nov 12, 2020 6:40 pm
Forum: Lewis Structures
Topic: Resonance Hybrid
Replies: 5
Views: 29

Re: Resonance Hybrid

The most stable structure (the one with the least amount of formal charges) is the structure that contributes the most.
by Lilly Catarozoli 1B
Thu Nov 12, 2020 6:38 pm
Forum: Dipole Moments
Topic: London Interactions
Replies: 5
Views: 20

Re: London Interactions

From what I understand, yes, London dispersion forces are always present regardless of bond type.
by Lilly Catarozoli 1B
Thu Nov 12, 2020 6:20 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration Confused
Replies: 3
Views: 25

Electron Configuration Confused

When I looked up the Aufbau Principle, it showed the diagram of the order that shells should be filled up (1s...5s, 4d). But, in the textbook answers, it lists 4d then 5s. What is the correct filling order for electron configurations? Thanks!
by Lilly Catarozoli 1B
Mon Nov 09, 2020 2:23 pm
Forum: Quantum Numbers and The H-Atom
Topic: Sapling 1D #23 Problem Quantum Numbers
Replies: 2
Views: 24

Sapling 1D #23 Problem Quantum Numbers

The question in the textbook asks: How many orbitals can have the following quantum numbers in an atom: (a) n=2, l=1 b) n=4, l=2, ml=-2 c) n=2 d) n=3, l=2, ml=+1 For part a, I understand that the electron configuration would be 2p, so there are 3 orbitals. But for part b and part d, I don't understa...
by Lilly Catarozoli 1B
Wed Nov 04, 2020 10:25 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Textbook question 1E 21
Replies: 3
Views: 27

Re: Textbook question 1E 21

Yes exactly! I like to draw diagrams, it helps me visualize where all the electrons are.
by Lilly Catarozoli 1B
Wed Nov 04, 2020 10:24 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 78
Views: 49073

Re: How to find my posts

You can go to "Quick links" and then click "Your posts"
by Lilly Catarozoli 1B
Wed Nov 04, 2020 10:22 pm
Forum: Properties of Light
Topic: How are you guys studying for the midterm?
Replies: 19
Views: 55

Re: How are you guys studying for the midterm?

I thought the modules on his website were super helpful because there are concept questions too!
by Lilly Catarozoli 1B
Wed Nov 04, 2020 10:21 pm
Forum: Octet Exceptions
Topic: "Octets" beyond 8
Replies: 6
Views: 39

Re: "Octets" beyond 8

The expanded octect I think is more stable because atoms in those periods have d-orbitals which can have more electrons.
by Lilly Catarozoli 1B
Wed Nov 04, 2020 10:19 pm
Forum: Ionic & Covalent Bonds
Topic: Textbook Problem 2A.1
Replies: 4
Views: 25

Re: Textbook Problem 2A.1

The d-orbitals have lower energy than the s and p orbitals!
by Lilly Catarozoli 1B
Sun Nov 01, 2020 8:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem 14B Winter 2021
Replies: 7
Views: 54

Re: Chem 14B Winter 2021

I've heard it was the same!
by Lilly Catarozoli 1B
Sun Nov 01, 2020 8:45 pm
Forum: Student Social/Study Group
Topic: Test Scored for Midterm 1
Replies: 49
Views: 345

Re: Test Scored for Midterm 1

I think they are double-checking the test so hopefully we get our scores back soon!
by Lilly Catarozoli 1B
Sun Nov 01, 2020 8:44 pm
Forum: Student Social/Study Group
Topic: Halloween!!!
Replies: 54
Views: 223

Re: Halloween!!!

I dressed up as Rachel Green from Friends and painted pumpkins!
by Lilly Catarozoli 1B
Sun Nov 01, 2020 8:43 pm
Forum: Properties of Light
Topic: Sapling #10
Replies: 11
Views: 59

Re: Sapling #10

Maybe try rounding your answer differently?
by Lilly Catarozoli 1B
Sun Nov 01, 2020 8:43 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Sapling #4
Replies: 8
Views: 69

Re: Sapling #4

You just need to divide the total energy by the work function from the step yu did before and then you should get the answer!
by Lilly Catarozoli 1B
Sat Oct 24, 2020 5:01 pm
Forum: Properties of Light
Topic: Constants
Replies: 21
Views: 93

Re: Constants

My TA said to use as many as the worksheet gives but to make sure your answer has the correct amount of sig figs.
by Lilly Catarozoli 1B
Thu Oct 22, 2020 3:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Set Up
Replies: 3
Views: 36

Midterm Set Up

Will we have to print anything for the midterm? Or will the test just be on CCLE for us to fill out online? Thanks!
by Lilly Catarozoli 1B
Thu Oct 22, 2020 3:49 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Showing our Work on the Midterm
Replies: 10
Views: 55

Re: Showing our Work on the Midterm

You can use the back of the periodic table and equations sheet!
by Lilly Catarozoli 1B
Thu Oct 22, 2020 3:47 pm
Forum: Student Social/Study Group
Topic: Midterm Prep
Replies: 15
Views: 92

Midterm Prep

Does anyone have any good study strategies for the first midterm? I'm not really sure where to start! Also, how many questions is the midterm? Thanks!
by Lilly Catarozoli 1B
Mon Oct 19, 2020 10:56 pm
Forum: Student Social/Study Group
Topic: Workshops
Replies: 3
Views: 33

Re: Workshops

Also, some UAs use old test problems as practice problems which is really helpful!
by Lilly Catarozoli 1B
Mon Oct 19, 2020 10:55 pm
Forum: Student Social/Study Group
Topic: How are you studying?
Replies: 196
Views: 874

Re: How are you studying?

Going to step-up sessions I think is very helpful! I also watch my lectures during the designated times even though they are pre-recorded. Hope this helps!
by Lilly Catarozoli 1B
Fri Oct 16, 2020 1:12 pm
Forum: Einstein Equation
Topic: Equation Sheet
Replies: 15
Views: 121

Re: Equation Sheet

Thanks everyone!
by Lilly Catarozoli 1B
Tue Oct 13, 2020 2:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Step Up Sessions
Replies: 71
Views: 4399

Re: Step Up Sessions

Are step up sessions or workshop sessions better for understanding material that may be on exams? Can I still attend workshop sessions if I don't have a strong background in chemistry? I went to a step up session today and we did old midterm problems. I haven't been to a workshop session, but I can...
by Lilly Catarozoli 1B
Tue Oct 13, 2020 2:48 pm
Forum: Properties of Light
Topic: Electric and Magnetic Fields of Light
Replies: 2
Views: 35

Re: Electric and Magnetic Fields of Light

I believe it is just important to note that light acts as a wave but also has particle properties, which is why increasing the intensity of the wave did not eject electrons in the photoelectric experiment (that's what someone said in a step up session and it helped me understand the model better).
by Lilly Catarozoli 1B
Tue Oct 13, 2020 2:45 pm
Forum: Limiting Reactant Calculations
Topic: Difference between limiting reactant and limiting reagent?
Replies: 14
Views: 79

Re: Difference between limiting reactant and limiting reagent?

They are the same thing! Just a different way of saying it.
by Lilly Catarozoli 1B
Tue Oct 13, 2020 2:45 pm
Forum: Photoelectric Effect
Topic: Energy of photons
Replies: 5
Views: 50

Re: Energy of photons

If you remember your equations, E= hv and c= (lambda)v, energy increases if you increase the frequency (v) of the light. However, light (electromagnetic radiation) always has the same speed c, and because c= (lambda)v then increasing v means lambda must decrease to keep c the same. Therefore, to in...
by Lilly Catarozoli 1B
Tue Oct 13, 2020 2:44 pm
Forum: Einstein Equation
Topic: Equation Sheet
Replies: 15
Views: 121

Equation Sheet

Will we have access to the equation and constant sheet on midterms and the final?
by Lilly Catarozoli 1B
Mon Oct 12, 2020 4:31 pm
Forum: Photoelectric Effect
Topic: Energy of photons
Replies: 5
Views: 50

Energy of photons

For the photoelectric effect, I understand that the number of photons didn't matter but their ability to displace electrons was what was important (the runner vs obstacle example). To increase the energy of photons, what changed? The wavelength or frequency, or both?
by Lilly Catarozoli 1B
Fri Oct 09, 2020 1:24 pm
Forum: Molarity, Solutions, Dilutions
Topic: Week 1 Question 6 Help Sapling
Replies: 3
Views: 23

Week 1 Question 6 Help Sapling

The question is, "If 3.88g of CuNO3 is dissolved in water to make a 0.880 M solution, what is the volume of the solution?". I converted the 3.88g to get moles and then used M=n/v and solved for v to get 0.02, but that answer is incorrect. Please help!
by Lilly Catarozoli 1B
Fri Oct 09, 2020 1:05 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Molar Mass and Molecular Mass Difference?
Replies: 19
Views: 172

Re: Molar Mass and Molecular Mass Difference?

I believe they can be used interchangeably. It depends on what units you are trying to get for your answer.
by Lilly Catarozoli 1B
Fri Oct 09, 2020 1:03 pm
Forum: SI Units, Unit Conversions
Topic: Prefix and Naming Units
Replies: 3
Views: 37

Prefix and Naming Units

Should we memorize/study the SI units and their prefixes, names, and meanings or will these be provided for assignments?
by Lilly Catarozoli 1B
Tue Oct 06, 2020 1:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Turning in textbook problems
Replies: 10
Views: 108

Re: Turning in textbook problems

I am pretty sure we just need to turn in the sapling homework. I believe the other homework is just for practice and not for a grade but correct me if I am wrong!
by Lilly Catarozoli 1B
Tue Oct 06, 2020 1:49 pm
Forum: Empirical & Molecular Formulas
Topic: Fundamentals F 13
Replies: 8
Views: 57

Re: Fundamentals F 13

I also would like the answer to this question!
by Lilly Catarozoli 1B
Tue Oct 06, 2020 1:43 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectra Q
Replies: 1
Views: 21

Re: Atomic Spectra Q

Hi! I am going to assume no because Lavelle said we would never have to memorize constants or equations (they would be given if necessary).

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