Search found 35 matches

by Mandeep Garcha 3C
Tue Nov 12, 2019 1:03 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework for Week 7
Replies: 5
Views: 20

Re: Homework for Week 7

Homework for week 7 should be on the chemical bonds outline because it was the last thing we learned before the midterm, specifically focus 3F.
by Mandeep Garcha 3C
Tue Nov 12, 2019 1:01 pm
Forum: General Science Questions
Topic: Test 2
Replies: 19
Views: 61

Re: Test 2

It should cover topics that we learn after the midterm.
by Mandeep Garcha 3C
Tue Nov 12, 2019 12:58 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Test Policy
Replies: 6
Views: 34

Re: Test Policy

I think it's okay to put the number next to the atom because that's what a lot of the TAs did during discussion and review sessions.
by Mandeep Garcha 3C
Tue Nov 12, 2019 12:53 pm
Forum: Bond Lengths & Energies
Topic: Week 7 Homework
Replies: 10
Views: 52

Re: Week 7 Homework

I believe the homework is the section of chemical bonds because that's we ended with before the midterm.
by Mandeep Garcha 3C
Tue Nov 12, 2019 12:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 7 Homework
Replies: 7
Views: 24

Re: Week 7 Homework

I would say it is on the section of chemical bonds because that's what we ended with before the midterm.
by Mandeep Garcha 3C
Tue Nov 05, 2019 1:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Electron Configuration
Replies: 5
Views: 34

Re: Midterm Electron Configuration

Professor Lavelle told us to primarily look at the s-block, p-block, and first row of d-block for this class, so I wouldn't worry too much about it.
by Mandeep Garcha 3C
Tue Nov 05, 2019 1:31 pm
Forum: Bond Lengths & Energies
Topic: Midterm
Replies: 8
Views: 56

Re: Midterm

There will be 8 questions for the 2-hour midterms, but I am positive that they will all have multiple parts like the practice problems we have seen.
by Mandeep Garcha 3C
Tue Nov 05, 2019 1:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s or 3d first?
Replies: 14
Views: 61

Re: 4s or 3d first?

4s comes before the 3d on the periodic table, which is why you might want to write the electron configuration in that order. However, we have been told write it out in order of the energy of the subshells (low-high energy).
by Mandeep Garcha 3C
Tue Nov 05, 2019 1:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Wed 11/6
Replies: 3
Views: 29

Re: Class Wed 11/6

There are no lectures on the day of the midterm, Wednesday 11/6/19. However, they did not clarify if there is discussion or not.
by Mandeep Garcha 3C
Tue Nov 05, 2019 1:20 pm
Forum: Lewis Structures
Topic: Midterm
Replies: 3
Views: 24

Re: Midterm

Everything up to Focus 2D and last Friday's lecture will be on the midterm.
by Mandeep Garcha 3C
Mon Oct 28, 2019 1:06 pm
Forum: General Science Questions
Topic: homework
Replies: 5
Views: 41

Re: homework

The homework due this week in discussion is on the section of chemical bonds.
by Mandeep Garcha 3C
Mon Oct 28, 2019 1:02 pm
Forum: Ionic & Covalent Bonds
Topic: delocalization
Replies: 3
Views: 21

Re: delocalization

Delocalization occurs when electric charge is spread over more than one atom. Benzene is a good example of this:
https://www.chemicool.com/images/benzen ... alized.png.
by Mandeep Garcha 3C
Mon Oct 28, 2019 12:57 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Multi-electron atoms
Replies: 6
Views: 24

Re: Multi-electron atoms

Nodal planes are the area around atomic nuclei where the probability of finding electrons is zero.
by Mandeep Garcha 3C
Mon Oct 28, 2019 12:55 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Cancelled Due To Fire?!?
Replies: 4
Views: 63

Re: Class Cancelled Due To Fire?!?

Classes are cancelled today. As for evacuation, the alerts say that the fire is not a threat to campus as of now.
by Mandeep Garcha 3C
Mon Oct 28, 2019 12:52 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonds confusion
Replies: 7
Views: 40

Re: Ionic Bonds confusion

Metals can only give electrons (e-) to nonmetals.
by Mandeep Garcha 3C
Mon Oct 21, 2019 5:23 pm
Forum: Balancing Chemical Reactions
Topic: Balancing equations.
Replies: 12
Views: 105

Re: Balancing equations.

I would say to balance the element that occurs the least and work your way up to the one that occurs the most. And always remember to double check that you successfully balanced the equation without any mistakes because it is easy to accidentally ignore an element.
by Mandeep Garcha 3C
Mon Oct 21, 2019 5:20 pm
Forum: Properties of Light
Topic: Chemistry Community Posts
Replies: 6
Views: 41

Re: Chemistry Community Posts

We are supposed post 5 times a week for 5 points. The posts are due by Sunday every week to get the full points.
by Mandeep Garcha 3C
Mon Oct 21, 2019 5:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: orbitals
Replies: 5
Views: 28

Re: orbitals

I believe my TA said that we do not need to be too concerned with drawing the different orbitals, but I am still familiarizing myself with them just in case.
by Mandeep Garcha 3C
Mon Oct 21, 2019 5:11 pm
Forum: Student Social/Study Group
Topic: Week 4 HW Problems
Replies: 7
Views: 62

Re: Week 4 HW Problems

I find it helpful to focus on the quantum world homework for now, as we barely started the topic of chemical bonds.
by Mandeep Garcha 3C
Mon Oct 21, 2019 5:03 pm
Forum: SI Units, Unit Conversions
Topic: Unit conversion
Replies: 15
Views: 105

Re: Unit conversion

It completely depends on what unit you are converting to/from but you would use a find the conversion for one unit, multiply your number by the conversion fraction, and cancel out the units.
by Mandeep Garcha 3C
Mon Oct 14, 2019 11:40 pm
Forum: Student Social/Study Group
Topic: Textbook Readings
Replies: 4
Views: 28

Re: Textbook Readings

Personally, the textbooks readings are only helpful to me when I am stuck on a homework problem. Other than that, the modules, homework problems, and lecture notes help me better.
by Mandeep Garcha 3C
Mon Oct 14, 2019 11:38 pm
Forum: Properties of Light
Topic: MidTerms and Finals
Replies: 11
Views: 71

Re: MidTerms and Finals

Only tests 1 and 2 are administered in our discussion sessions. The midterm and final will not. The midterm is Wednesday November 6 6-8 pm and the final is Sunday December 8 11:30 am -2:30 pm.
by Mandeep Garcha 3C
Mon Oct 14, 2019 11:34 pm
Forum: *Shrodinger Equation
Topic: No More Audio Visuals After Heisenberg?
Replies: 2
Views: 34

Re: No More Audio Visuals After Heisenberg?

I have been using those modules for additional help too! Unfortunately, I think that there aren't anymore after these. The only ones online are from the past section and some of this section.
by Mandeep Garcha 3C
Mon Oct 14, 2019 11:29 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Best Way To Study?
Replies: 53
Views: 186

Re: Best Way To Study?

Personally, doing the online modules, reading the book, and doing all of the homework problems listed in the outline have helped me the best.
by Mandeep Garcha 3C
Mon Oct 14, 2019 11:27 pm
Forum: *Shrodinger Equation
Topic: Midterm
Replies: 8
Views: 78

Re: Midterm

As stated on the syllabus there are 2 tests, 1 midterm, and 1 final. We have already taken one test. The midterm is on Wednesday, November 6 from 6-8 pm. Test 2 is starting Tuesday, November 19 in discussion session. The final is Sunday, December 8 from 11:30 am-2:30 pm.
by Mandeep Garcha 3C
Wed Oct 09, 2019 10:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 1707

Re: Test 1 [ENDORSED]

No, for this test all you need to bring is a pen and a SCIENTIFIC calculator. They will provide the test, a periodic table, and list of constants.
by Mandeep Garcha 3C
Wed Oct 09, 2019 10:37 pm
Forum: Einstein Equation
Topic: Numbers to memorize [ENDORSED]
Replies: 37
Views: 963

Re: Numbers to memorize [ENDORSED]

They will give a list of constants and a periodic table.
by Mandeep Garcha 3C
Wed Oct 09, 2019 10:33 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Wrong Textbook
Replies: 12
Views: 96

Re: Wrong Textbook

I have seen both textbooks and the problems are more or less the same, but I would play it safe and just get the 7th edition to make sure that you are doing the correct homework problems for full credit.
by Mandeep Garcha 3C
Wed Oct 09, 2019 10:30 pm
Forum: SI Units, Unit Conversions
Topic: Practice Problems?
Replies: 11
Views: 117

Re: Practice Problems?

I did all of the problems that were listed in the outline and I felt that it allowed me to understand the topics better.
by Mandeep Garcha 3C
Wed Oct 09, 2019 10:27 pm
Forum: SI Units, Unit Conversions
Topic: Test 1
Replies: 9
Views: 112

Re: Test 1

The test covers the topics that Dr. Lavelle has included in his outline:

https://lavelle.chem.ucla.edu/wp-conten ... ciples.pdf
by Mandeep Garcha 3C
Mon Sep 30, 2019 9:41 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Accuracy vs Precision
Replies: 10
Views: 89

Re: Accuracy vs Precision

Professor Lavelle used this picture:
http://cdn.antarcticglaciers.org/wp-con ... curacy.png
on his powerpoint which I felt was very helpful in understanding the difference between the two.
by Mandeep Garcha 3C
Mon Sep 30, 2019 9:34 pm
Forum: Significant Figures
Topic: Rounding significant figures when it comes to elements of the periodic table
Replies: 6
Views: 44

Re: Rounding significant figures when it comes to elements of the periodic table

I would recommend not rounding the number and using the exact number from the periodic table to get the most accurate answer.
by Mandeep Garcha 3C
Mon Sep 30, 2019 8:30 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 165
Views: 100731

Re: Rusty on High School Chem [ENDORSED]

I'm in a similar situation, I have not taken chemistry since my sophomore year of high school and this is my first year of college. However, I think using ALL of the resources we have available to us is imperative. Professor Lavelle has mentioned that there are 32 hours of assistance each week and y...
by Mandeep Garcha 3C
Mon Sep 30, 2019 8:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice on Homework
Replies: 13
Views: 109

Re: Advice on Homework

Even though we only have to turn in five questions, I think it is good practice to do most of the other problems.
by Mandeep Garcha 3C
Mon Sep 30, 2019 8:18 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Formula
Replies: 7
Views: 38

Empirical Formula

When using the empirical formula do we always assume that the sample mass is 100g?

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