Search found 26 matches

by Chem_Admin
Sat Nov 14, 2020 7:35 am
Forum: Electronegativity
Topic: General Idea of Electronegativity [ENDORSED]
Replies: 3
Views: 35

Re: General Idea of Electronegativity [ENDORSED]

Be able to compare bonds as being more ionic (or covalent) by knowing trends.
by Chem_Admin
Sat Nov 14, 2020 7:30 am
Forum: Ionic & Covalent Bonds
Topic: Midterm 2 DNA base pairs [ENDORSED]
Replies: 1
Views: 311

Re: Midterm 2 DNA base pairs [ENDORSED]

Be able to identify the interactions between them: yes

Remember/know the entire structure: no
by Chem_Admin
Fri Nov 13, 2020 6:30 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem Community grading [ENDORSED]
Replies: 2
Views: 39

Re: Chem Community grading [ENDORSED]

I answered it many times. 5 posts per week. See: • Syllabus • Test and Exam Schedule • Weekly Online Discussion 1pt per post, max 5 points per week. From the Syllabus: "Chemistry Community Weekly Online Discussion (5 pts per week)" From Weekly Online Discussion: "Any course related po...
by Chem_Admin
Thu Nov 12, 2020 9:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem 14B Waitlist
Replies: 6
Views: 90

Re: Chem 14B Waitlist

Won't be known until Jan.
by Chem_Admin
Thu Nov 12, 2020 7:37 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Community Points [ENDORSED]
Replies: 4
Views: 361

Re: Chemistry Community Points [ENDORSED]

Jalyn Davis 3J wrote:I am pretty sure all posts/responses count. I know the original posts need to be in the correct section, but I think it's fine if you reply to posts even if they were not posted in the right board.


Don't respond to posts that are clearly not in correct topic/section. They will not count.
by Chem_Admin
Thu Nov 12, 2020 7:30 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry 14B [ENDORSED]
Replies: 2
Views: 462

Re: Chemistry 14B [ENDORSED]

Avoid overlapping classes as Chem 14B could have tests during lecture times. Also recorded lectures on campus have not yet been authorized. Because I very much want to do classes that are as close as possible to the 'real thing' it involves AVS, Bruincast, etc. They all have to agree and be allowed ...
by Chem_Admin
Mon Nov 09, 2020 10:06 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 Lecture Cut-Off [ENDORSED]
Replies: 3
Views: 44

Re: Midterm 2 Lecture Cut-Off [ENDORSED]

BoparaiAdeshsurjit2I wrote:What will be the last lecture that covers material for midterm 2? Is it this Wednesday or Friday?


Make sure you are receiving class email as I sent details Sunday.
by Chem_Admin
Mon Nov 09, 2020 2:16 pm
Forum: Bond Lengths & Energies
Topic: Negative energies? [ENDORSED]
Replies: 7
Views: 50

Re: Negative energies? [ENDORSED]

I will go through this in my 3pm discussion section today.
by Chem_Admin
Mon Nov 09, 2020 2:12 pm
Forum: Ionic & Covalent Bonds
Topic: Hydrogen Bonds [ENDORSED]
Replies: 9
Views: 54

Re: Hydrogen Bonds [ENDORSED]

Lily, I will go through this in my 3pm discussion section today.
by Chem_Admin
Sun Nov 08, 2020 6:36 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2
Replies: 3
Views: 29

Re: Midterm 2

More shorter questions.
by Chem_Admin
Sun Nov 08, 2020 8:59 am
Forum: Trends in The Periodic Table
Topic: Size & Expected Knowledge
Replies: 5
Views: 52

Re: Size & Expected Knowledge

Yes

Straight forward to work it out.

Na far left, therefore largest row two element as size decreases from left to right.

Kr is the smallest element in row three as it is at the far right.
by Chem_Admin
Mon Mar 18, 2019 10:45 am
Forum: Balancing Redox Reactions
Topic: Triprotic
Replies: 7
Views: 3130

Re: Triprotic

test
by Chem_Admin
Sat Feb 11, 2017 12:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Winter 2017
Replies: 87
Views: 15823

Re: Midterm Winter 2017

Part 3 of the Friday Midterm Review.
by Chem_Admin
Fri Feb 10, 2017 11:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Winter 2017
Replies: 87
Views: 15823

Re: Midterm Winter 2017

Part 2 of the Friday Midterm Review.
by Chem_Admin
Tue Jun 28, 2016 1:17 pm
Forum: Endorsed Post
Topic: Endorsed Posts
Replies: 0
Views: 5090

Endorsed Posts

Endorsed posts means their content has been checked by a Chemistry Moderator (Chem_Mod) and deemed suitable/correct. “Endorsed” topics are marked by a tag wich is easily visible to all users of the Chemistry Community Website: image1.png Posts that are not endorsed does not mean they are incorrect. ...
by Chem_Admin
Fri Oct 10, 2014 9:17 am
Forum: How to Subscribe to a Forum, Subscribe to a Topic, and Bookmark a Topic (click for details)
Topic: How to Subscribe to a Forum, Subscribe to a Topic, and Bookm
Replies: 0
Views: 7113

How to Subscribe to a Forum, Subscribe to a Topic, and Bookm

Topics and posts can be bookmarked or subscribed to by navigating to the bottom of a page and clicking the "Bookmark topic" link or the "Subscribe topic" link. https://lavelle.chem.ucla.edu/forum/images/help/subscribe-bookmark.png Bookmarks may be managed in the User Control Pane...
by Chem_Admin
Tue Apr 29, 2014 1:59 pm
Forum: Multimedia Attachments (click for details)
Topic: Multimedia Attachments (click for details)
Replies: 0
Views: 8527

Multimedia Attachments (click for details)

To add images, animations, videos, PDFs, etc., to your post: Navigate to the bottom of a new or existing post edit screen. Click the "Upload attachment" tab, located to the right of the "Options" tab. Click the "Choose" button. Select your file to upload. After uploadin...
by Chem_Admin
Tue Apr 29, 2014 1:57 pm
Forum: Strikethrough (click for details)
Topic: Strikethrough (click for details)
Replies: 0
Views: 6936

Strikethrough (click for details)

To use Strikethrough:

    Navigate to edit screen of an existing post or create a new post.

    While in the text entry box, select the text to strike-through.

    Click the "strike" button in the button bar, located to the right of the "Font Color" button.
by Chem_Admin
Tue Apr 29, 2014 1:56 pm
Forum: Equation Editor (click for details)
Topic: Equation Editor (click for details)
Replies: 0
Views: 7020

Equation Editor (click for details)

How-To-Use Equation Editor • To insert an equation, choose the “Equation Editor” located on the right of the toolbar. • A new window will open and you can type equations and mathematical functions in the box. There is also a separate area below the equation editing box to keep track of what is type...
by Chem_Admin
Fri Mar 14, 2014 9:15 am
Forum: Email Notification (click for details)
Topic: Email Notification
Replies: 0
Views: 6895

Email Notification

**************************************************************** To subscribe to forums or topics: 1. Navigate to the bottom of the forum or topic of interest. 2. Click the "Subscribe forum" or "Subscribe topic" link. To unsubscribe from a forum or topic: 1. Navigate to the botto...
by Chem_Admin
Wed Nov 27, 2013 3:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Thanksgiving Week
Replies: 3
Views: 986

Re: Thanksgiving Week

All regular office hours and discussion sections this week and next week (week 10).
UCLA closes Wed at 3pm. Anything after 3pm is Thanksgiving long weekend.
by Chem_Admin
Sun Nov 24, 2013 9:18 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry 14B Enrollment
Replies: 3
Views: 1138

Re: Chemistry 14B Enrollment

Carolina, Admin will likely increase the class size for all 3 classes to 385 so I would keep a close watch to enroll when this occurs or get on the wait-list. Other than that faculty have little administrative input. Appreciate your interest in my class. By the way students usually prefer taking cla...
by Chem_Admin
Thu Nov 14, 2013 3:50 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 1
Views: 500

Re: Naming Coordination Compounds

I have posted it on my class web site titled: Naming Coordination Compounds
This should be a helpful summary for ligand names.
by Chem_Admin
Mon Aug 22, 2011 2:08 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Can a charged structure be non-polar?
Replies: 1
Views: 506

Re: Can a charged structure be non-polar?

Answer: Na+ is not polar yet it is charged and highly water soluble. Charged does not imply Polar. CCl4 is symmetric and non-polar even though it has polar bonds. The same is true of GaCl4-. The negative charge is not located on any one Cl. The negative charge is spread equally on all the Cl and pr...
by Chem_Admin
Mon Aug 22, 2011 2:02 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Can a charged structure be non-polar?
Replies: 1
Views: 506

Can a charged structure be non-polar?

Question: I was under the impression that anytime a structure is charged (cation or anion) then it is polar regardless of its VSEPR structure. However, while going through the book problems I noticed that the book claims that if the structure is symmetric then it is nonpolar. An example is GaCl4-, ...
by Chem_Admin
Thu Jul 28, 2011 4:06 pm
Forum: Forum Rules and Helpful Hints
Topic: Forum Rules and Helpful Hints
Replies: 0
Views: 9238

Forum Rules and Helpful Hints

All posts must be in English. No bad language. Be polite and help others having difficulty understanding a topic or solving a problem. Read previous Q&A related to the topic of your question, as your question may already be answered. Duplicate questions will be automatically deleted. Questions ...

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