CHEMISTRY COMMUNITY

Review of Chemical & Physical Principles

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SI Units, Unit Conversions
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961 Topics

5478 Posts

Last post Re: Conversions
by 606275877 View the latest post
Fri Nov 22, 2024 12:11 pm
Significant Figures
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Topics: 820

820 Topics

4621 Posts

Last post Re: Constants
by 806156213 View the latest post
Tue Nov 26, 2024 10:32 pm
Accuracy, Precision, Mole, Other Definitions
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731 Topics

3755 Posts

Last post Re: Periodic Table Atomic Wei…
by Varsha 1G View the latest post
Mon Oct 28, 2024 11:27 am
Molarity, Solutions, Dilutions
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1192 Topics

4512 Posts

Last post Re: Tips for solving dilution…
by Reva Diwan 2J View the latest post
Fri Dec 06, 2024 9:13 pm
Empirical & Molecular Formulas
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1342 Topics

5372 Posts

Last post Re: Molecular Formula
by 006455961 View the latest post
Sat Dec 07, 2024 5:52 pm
Balancing Chemical Reactions
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807 Topics

4427 Posts

Last post Re: Balancing Equations with …
by 606275877 View the latest post
Fri Nov 08, 2024 1:06 pm
Limiting Reactant Calculations
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1290 Topics

5219 Posts

Last post Re: Comparing Units
by 206363692 View the latest post
Sat Dec 07, 2024 1:09 am

The Quantum World

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Properties of Light
$c=\lambda v$
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3270 Topics

13656 Posts

Last post Re: Electromagnetic Spectrum
by 306520253 View the latest post
Sat Dec 07, 2024 1:56 pm
Properties of Electrons
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1578 Topics

5887 Posts

Last post Re: Electron Spin
by 806156213 View the latest post
Tue Nov 19, 2024 11:02 pm
Einstein Equation
$E=hv$
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Topics: 629

629 Topics

2812 Posts

Last post Re: 1B. 15c
by ChelseaMoraDis2G View the latest post
Sun Oct 27, 2024 6:56 pm
*Black Body Radiation
(Wien's law: $T\lambda _{max}=\frac{1}{5}C_{2}$ )
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174 Topics

763 Posts

Last post Re: Radiation
by Chem_Mod View the latest post
Tue Oct 15, 2024 12:53 pm
Photoelectric Effect
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Topics: 1993

1993 Topics

7414 Posts

Last post Re: photoelectric effect
by Trentin Hoang 2A View the latest post
Fri Dec 06, 2024 10:11 pm
Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
H-Atom ( $E_{n}=-\frac{hR}{n^{2}}$ )
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Topics: 1841

1841 Topics

5887 Posts

Last post Re: Rydberg formula
by 506198813 View the latest post
Sat Dec 07, 2024 12:07 am
DeBroglie Equation
$\lambda=\frac{h}{p}$
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1391 Topics

5423 Posts

Last post Re: Schrodinger Wave Function…
by Parker Powers 2A View the latest post
Fri Dec 06, 2024 2:01 pm
Heisenberg Indeterminacy (Uncertainty) Equation
$\Delta p \Delta x\geq \frac{h}{4\pi }$
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Topics: 1343

1343 Topics

4478 Posts

Last post Re: Why uncertainty exists at…
by 506269669 View the latest post
Fri Dec 06, 2024 8:45 pm
*Shrodinger Equation
$H_{\psi }=E_{\psi }$

1-D: $E_{TOTAL}\psi (x)=E_{k}\psi (x)+V(x)\psi(x)=-\frac{h^{2}}{8\pi ^{2}m}\frac{d^{2}\psi(x)}{dx^{2}}+V(x)\psi(x)$
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Topics: 598

598 Topics

1928 Posts

Last post Re: Wave function and probabi…
by Chem_Mod View the latest post
Mon Oct 28, 2024 4:26 pm
*Particle in a Box
$E_{n}=\frac{h^{2}n^{2}}{8mL^{2}}$
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Topics: 78

78 Topics

299 Posts

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by Chem_Mod View the latest post
Sat Oct 12, 2024 3:35 pm
Wave Functions and s-, p-, d-, f- Orbitals
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2080 Topics

7509 Posts

Last post Re: Lyman/Balmer Series and t…
by Vahag_Matevosian_2E View the latest post
Sat Dec 07, 2024 5:39 pm
Quantum Numbers and The H-Atom
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Topics: 1230

1230 Topics

4357 Posts

Last post Re: Spectral emission lines a…
by 906218461 2J View the latest post
Fri Dec 06, 2024 8:51 pm
Electron Configurations for Multi-Electron Atoms
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2443 Topics

7912 Posts

Last post Re: Electron Config
by Danis Rivera 2C View the latest post
Sat Dec 07, 2024 6:15 pm
Trends in The Periodic Table
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1741 Topics

6753 Posts

Last post Re: Electronegativity and Ion…
by 506198813 View the latest post
Sat Dec 07, 2024 12:12 am

Chemical Bonds

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Ionic & Covalent Bonds
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2853 Topics

12010 Posts

Last post Re: How to Know Which Bond is…
by Elle Beehler 2F View the latest post
Fri Dec 06, 2024 11:08 pm
Sigma & Pi Bonds
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Topics: 866

866 Topics

3457 Posts

Last post Re: Sigma and Pi Bonds
by 306112410 View the latest post
Fri Dec 06, 2024 7:13 pm
Lewis Structures
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3811 Topics

13516 Posts

Last post Re: line structure from lectu…
by Olivia Suhy 2K View the latest post
Fri Dec 06, 2024 11:19 pm
Resonance Structures
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Topics: 1420

1420 Topics

5250 Posts

Last post Re: resonance structures
by Riya_Patel_1L View the latest post
Wed Nov 27, 2024 9:41 am
Formal Charge and Oxidation Numbers
$FC=V-(L+\frac{S}{2})$
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1079 Topics

4506 Posts

Last post Re: Oxidation Number for Tran…
by Sophia_Lavallee_1A View the latest post
Tue Nov 26, 2024 1:55 pm
Octet Exceptions
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1208 Topics

4341 Posts

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by 006455961 View the latest post
Sat Dec 07, 2024 5:49 pm
Coordinate Covalent Bonds
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Topics: 329

329 Topics

1263 Posts

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by 806468747 View the latest post
Fri Dec 06, 2024 11:53 pm
Polarisability of Anions, The Polarizing Power of Cations
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Topics: 668

668 Topics

2350 Posts

Last post Re: ranking
by Lauren Mozier 1J View the latest post
Fri Dec 06, 2024 8:49 pm
Electronegativity
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754 Topics

3689 Posts

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by JaciNakamura_1C View the latest post
Wed Dec 04, 2024 12:40 am
Dipole Moments
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1715 Topics

6115 Posts

Last post Re: AsO4 polarity?
by 206363692 View the latest post
Sat Dec 07, 2024 1:05 am
Bond Lengths & Energies
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1136 Topics

4727 Posts

Last post Re: Link Between Bond Order a…
by 506198813 View the latest post
Sat Dec 07, 2024 12:00 am

Forces and Liquid Structure

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Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
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Topics: 1201

1201 Topics

4338 Posts

Last post Re: Dipole induced dipole
by 106364673 View the latest post
Sat Dec 07, 2024 7:55 pm
*Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
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Topics: 33

33 Topics

215 Posts

Last post Re: Question 4
by Chem_Mod View the latest post
Tue Oct 15, 2024 12:40 am

Molecular Shape and Structure

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Determining Molecular Shape (VSEPR)
(Polar molecules, Non-polar molecules, etc.)
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Topics: 5219

5219 Topics

20607 Posts

Last post Re: Textbook Problem 2.63 / B…
by Cierra 1A View the latest post
Sat Dec 07, 2024 5:29 pm
Hybridization
$sp, sp^{2}, sp^{3}, dsp^{3}, d^{2}sp^{3}$
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2794 Topics

9717 Posts

Last post Re: Textbook 2.45
by HoneyWalnutShrimp View the latest post
Sun Dec 08, 2024 2:33 am
*Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
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805 Topics

2544 Posts

Last post Re: Molecular Orbital Theory …
by Chem_Mod View the latest post
Sat Oct 12, 2024 4:04 pm

Coordination Compounds and their Biological Importance

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Naming
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2520 Topics

8834 Posts

Last post Re: Water
by Jayden Lee 2F View the latest post
Sun Dec 08, 2024 1:50 am
Shape, Structure, Coordination Number, Ligands
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Topics: 3246

3246 Topics

10375 Posts

Last post Re: Polydentate bonds
by HoneyWalnutShrimp View the latest post
Sat Dec 07, 2024 8:35 pm
Biological Examples
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Topics: 489

489 Topics

1760 Posts

Last post Re: Pophrin, Heme and Cisplat…
by HoneyWalnutShrimp View the latest post
Sun Dec 08, 2024 1:52 am
Industrial Examples
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Topics: 21

21 Topics

122 Posts

Last post Re: More examples
by Huanyan Zheng 1B View the latest post
Fri Dec 06, 2024 3:45 pm
*Stereochemistry
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Topics: 23

23 Topics

69 Posts

Last post Re: Stereochemistry is not in…
by Chem_Mod View the latest post
Sat Oct 12, 2024 4:09 pm
*Crystal Field Theory
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Topics: 13

13 Topics

42 Posts

Last post Re: Crystal Field Theory is n…
by Chem_Mod View the latest post
Sat Oct 12, 2024 4:23 pm
*Molecular Orbital Theory Applied To Transition Metals
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46 Topics

144 Posts

Last post Re: *Molecular Orbital Theory…
by Chem_Mod View the latest post
Sat Oct 12, 2024 4:34 pm

Acids and Bases

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Properties & Structures of Inorganic & Organic Acids
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918 Topics

3312 Posts

Last post Re: Electron-donating groups
by Chem_Mod View the latest post
Sat Dec 07, 2024 7:44 pm
Properties & Structures of Inorganic & Organic Bases
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Topics: 207

207 Topics

708 Posts

Last post Re: 6A. 13 d. H-
by Angela_Wong_1I View the latest post
Sat Dec 07, 2024 5:08 pm
Amphoteric Compounds
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Topics: 528

528 Topics

1862 Posts

Last post Re: Amphoteric Reactions
by 206363692 View the latest post
Sat Dec 07, 2024 1:28 am
Lewis Acids & Bases
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1419 Topics

5170 Posts

Last post Re: Neutralization
by Hooman View the latest post
Sun Dec 08, 2024 2:39 am
Bronsted Acids & Bases
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Topics: 1431

1431 Topics

4513 Posts

Last post Re: textbook 6C.19
by Hailey Nguyen 2B View the latest post
Sat Dec 07, 2024 9:46 pm
Conjugate Acids & Bases
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Topics: 748

748 Topics

2575 Posts

Last post Re: Determining which is more…
by liah View the latest post
Sat Dec 07, 2024 5:11 pm
Acidity & Basicity Constants and The Conjugate Seesaw
Acidity $K_{a}$
Basicity $K_{b}$
The Conjugate Seesaw $K_{a}\times K_{b}=K_{w}$
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Topics: 971

971 Topics

3182 Posts

Last post Re: Comparing pKa vs. pH and …
by HoneyWalnutShrimp View the latest post
Sun Dec 08, 2024 1:59 am
Calculating pH or pOH for Strong & Weak Acids & Bases
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Topics: 1888

1888 Topics

6123 Posts

Last post Re: pH of weak acids and bases
by Chem_Mod View the latest post
Sat Dec 07, 2024 9:08 pm
Polyprotic Acids & Bases
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Topics: 385

385 Topics

1223 Posts

Last post Re: Reactions of polyprotic a…
by Jayden Lee 2F View the latest post
Sun Dec 08, 2024 1:48 am
Identifying Acidic & Basic Salts
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Topics: 710

710 Topics

2240 Posts

Last post Re: textbook 6d.11 (d)
by Ken Woo 1K View the latest post
Sat Dec 07, 2024 10:52 pm
Calculating the pH of Salt Solutions
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Topics: 475

475 Topics

1664 Posts

Last post Re: HSO4- and H2PO4- exceptio…
by Jayden Lee 2F View the latest post
Sun Dec 08, 2024 1:44 am
Air Pollution & Acid Rain
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Topics: 110

110 Topics

466 Posts

Last post Re: Basic Rain
by 806144197 View the latest post
Fri Dec 06, 2024 1:47 pm

Forum

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Chem 14A Uploaded Files (Worksheets, etc.)
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355 Topics

970 Posts

Last post Re: MOLECULAR SHAPE/STRUCTURE…
by Chem_Mod View the latest post
Sat Dec 07, 2024 8:38 pm
Student Social/Study Group
This forum topic is for students to self-organize study groups, etc.
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Topics: 710

710 Topics

17660 Posts

Last post Re: 14B discussion swap
by AnaiGutierrez_2B View the latest post
Fri Dec 06, 2024 8:13 pm
Administrative Questions and Class Announcements
Any general non-science questions (software questions/problems, etc.,) and class announcements.
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Topics: 1930

1930 Topics

10574 Posts

Last post Re: Do we need to know englis…
by HoneyWalnutShrimp View the latest post
Sat Dec 07, 2024 8:29 pm
General Science Questions
Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).
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Topics: 550

550 Topics

3194 Posts

Last post Re: Final
by Chem_Mod View the latest post
Thu Dec 05, 2024 7:21 am

*Aqueous Equilibria

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*Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
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Topics: 177

177 Topics

461 Posts

Last post Re: can only water be used as…
by carlee_romero_3A View the latest post
Sun Mar 05, 2023 8:27 pm
*Biological Importance of Buffer Solutions
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Topics: 12

12 Topics

29 Posts

Last post Re: Buffer Solutions Maintain…
by Chem_Mod View the latest post
Wed Dec 13, 2023 10:59 pm
*Titrations & Titration Calculations
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Topics: 258

258 Topics

681 Posts

Last post Re: Titration Curves w/ Acids…
by Chem_Mod View the latest post
Tue Dec 12, 2023 3:54 pm
*Indicators
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Topics: 23

23 Topics

65 Posts

Last post Re: pKA and Desired pH w/ Buf…
by Chem_Mod View the latest post
Wed Dec 13, 2023 10:42 pm

Chem 14A

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