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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Topics: 731

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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1191 Topics

4510 Posts

Last post Re: Easiest way to remember c…
by Anjali Mehra 1A View the latest post
Tue Nov 05, 2024 11:39 am
Empirical & Molecular Formulas
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1340 Topics

5367 Posts

Last post finding molecular formulas fr…
by 906430805 View the latest post
Thu Dec 05, 2024 11:02 am
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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1289 Topics

5217 Posts

Last post Re: Limiting Reactant
by Armaan1A View the latest post
Tue Nov 26, 2024 10:46 pm

The Quantum World

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Properties of Light
$c=\lambda v$
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3268 Topics

13651 Posts

Last post Re: Radio Waves
by 806156213 View the latest post
Tue Nov 05, 2024 9:59 pm
Properties of Electrons
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Topics: 1578

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

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by Chem_Mod View the latest post
Tue Oct 15, 2024 12:53 pm
Photoelectric Effect
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Topics: 1990

1990 Topics

7407 Posts

Last post Re: Light as Waves and Partic…
by 606176900 View the latest post
Wed Dec 04, 2024 11:26 pm
Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
H-Atom ( $E_{n}=-\frac{hR}{n^{2}}$ )
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Topics: 1839

1839 Topics

5883 Posts

Last post Re: Atomic Spectral line emis…
by Annabelle Chung 1A View the latest post
Tue Dec 03, 2024 11:51 pm
DeBroglie Equation
$\lambda=\frac{h}{p}$
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1389 Topics

5419 Posts

Last post Re: de brogile
by Emma Smith 1D View the latest post
Wed Dec 04, 2024 12:32 am
Heisenberg Indeterminacy (Uncertainty) Equation
$\Delta p \Delta x\geq \frac{h}{4\pi }$
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1342 Topics

4476 Posts

Last post Re: Minimum Uncertainty
by Praise Yu 1C View the latest post
Tue Dec 03, 2024 10:10 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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Topics: 2078

2078 Topics

7505 Posts

Last post Re: Week 2,3,4 Homework Quest…
by Katelyn Wu 1I View the latest post
Thu Dec 05, 2024 3:19 am
Quantum Numbers and The H-Atom
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Topics: 1229

1229 Topics

4355 Posts

Last post Re: ml quantum number
by Danis Rivera 2C View the latest post
Tue Nov 19, 2024 10:43 am
Electron Configurations for Multi-Electron Atoms
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2441 Topics

7908 Posts

Last post Re: Neutral atoms orbitals vs…
by Danis Rivera 2C View the latest post
Tue Nov 19, 2024 10:39 am
Trends in The Periodic Table
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1740 Topics

6751 Posts

Last post Re: Second ionization energy
by Hunter Rosales 2C View the latest post
Wed Dec 04, 2024 10:47 pm

Chemical Bonds

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Ionic & Covalent Bonds
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2851 Topics

12005 Posts

Last post Re: bond lenths
by 806156213 View the latest post
Tue Dec 03, 2024 9:43 pm
Sigma & Pi Bonds
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Topics: 863

863 Topics

3450 Posts

Last post Re: Triple Bond - Pi Bonds
by StacyFloresG_1B View the latest post
Tue Dec 03, 2024 8:00 pm
Lewis Structures
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Topics: 3808

3808 Topics

13508 Posts

Last post Re: SO3 lewis structure
by 406501249 View the latest post
Thu Dec 05, 2024 10:46 am
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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Topics: 1079

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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Topics: 1206

1206 Topics

4337 Posts

Last post Re: HOCO Radical
by Donovan Le 1B View the latest post
Sun Nov 24, 2024 10:59 pm
Coordinate Covalent Bonds
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Topics: 328

328 Topics

1261 Posts

Last post Re: Ligand Binding Sites
by Gargi Patel 1F View the latest post
Tue Dec 03, 2024 8:58 pm
Polarisability of Anions, The Polarizing Power of Cations
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Topics: 667

667 Topics

2348 Posts

Last post Re: Polarization in bonds wit…
by Giada Leggero 1F View the latest post
Mon Nov 25, 2024 5:54 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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1714 Topics

6113 Posts

Last post Re: dipole moments
by Haley Kaneshiro 1F View the latest post
Mon Dec 02, 2024 4:46 pm
Bond Lengths & Energies
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1135 Topics

4725 Posts

Last post Re: Bond lengths and Vapor
by Nitya Jhamb View the latest post
Thu Dec 05, 2024 11:45 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: 1197

1197 Topics

4330 Posts

Last post Re: Forces In Relation To Ion…
by Rikhil_Seth_1L View the latest post
Wed Dec 04, 2024 10:57 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: 5191

5191 Topics

20536 Posts

Last post Determining Placement of Atoms
by Ian Williams 2I View the latest post
Thu Dec 05, 2024 3:15 pm
Hybridization
$sp, sp^{2}, sp^{3}, dsp^{3}, d^{2}sp^{3}$
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Topics: 2777

2777 Topics

9682 Posts

Last post Re: Question 2.27 - Bond angl…
by Hildana_2I View the latest post
Thu Dec 05, 2024 3:09 pm
*Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
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Topics: 805

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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2492 Topics

8773 Posts

Last post Re: Final question applicatio…
by Chem_Mod View the latest post
Thu Dec 05, 2024 2:08 pm
Shape, Structure, Coordination Number, Ligands
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3214 Topics

10306 Posts

Last post Re: Problem 9C.7
by Neal_Malik_2H View the latest post
Thu Dec 05, 2024 2:57 pm
Biological Examples
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Topics: 484

484 Topics

1749 Posts

Last post Biological Example- Photosynt…
by Nevaeh Babauta 1H View the latest post
Thu Dec 05, 2024 1:55 pm
Industrial Examples
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Topics: 21

21 Topics

121 Posts

Last post Re: More examples
by Sophie Zhou 2H View the latest post
Sat Nov 30, 2024 4:47 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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Topics: 46

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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889 Topics

3243 Posts

Last post Re: Difference between inorga…
by lindsayng_2H View the latest post
Thu Dec 05, 2024 3:19 pm
Properties & Structures of Inorganic & Organic Bases
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Topics: 196

196 Topics

684 Posts

Last post Re: pKa and pH
by Shayari View the latest post
Thu Dec 05, 2024 11:08 am
Amphoteric Compounds
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Topics: 504

504 Topics

1807 Posts

Last post More examples of amphoteric c…
by oliviamyers-lec2 View the latest post
Thu Dec 05, 2024 3:20 pm
Lewis Acids & Bases
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1384 Topics

5090 Posts

Last post Re: Acids and Bases Achieve H…
by Clara Truong 2I View the latest post
Thu Dec 05, 2024 1:40 pm
Bronsted Acids & Bases
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1385 Topics

4409 Posts

Last post Re: Bronsted Acid/Base
by 006369100 View the latest post
Thu Dec 05, 2024 3:09 pm
Conjugate Acids & Bases
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718 Topics

2506 Posts

Last post Re: How do you find the conju…
by lindsayng_2H View the latest post
Thu Dec 05, 2024 3:16 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: 938

938 Topics

3112 Posts

Last post Re: Equilibrium Constants and…
by Charlie Black 2F View the latest post
Thu Dec 05, 2024 1:25 pm
Calculating pH or pOH for Strong & Weak Acids & Bases
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Topics: 1860

1860 Topics

6059 Posts

Last post strong and weak acids and bas…
by 006369100 View the latest post
Thu Dec 05, 2024 3:19 pm
Polyprotic Acids & Bases
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Topics: 357

357 Topics

1162 Posts

Last post Polyprotic Acids & Bases Exam…
by oliviamyers-lec2 View the latest post
Thu Dec 05, 2024 3:17 pm
Identifying Acidic & Basic Salts
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Topics: 678

678 Topics

2167 Posts

Last post Re: Identifying
by Nitya Jhamb View the latest post
Thu Dec 05, 2024 11:50 am
Calculating the pH of Salt Solutions
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Topics: 462

462 Topics

1634 Posts

Last post Focus 6D #11
by 606422840 View the latest post
Thu Dec 05, 2024 3:11 pm
Air Pollution & Acid Rain
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Topics: 104

104 Topics

454 Posts

Last post Re: Acid rain causes
by Shayari View the latest post
Thu Dec 05, 2024 12:22 am

Forum

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

951 Posts

Last post Re: Kathe's Week 10- Molecula…
by Chem_Mod View the latest post
Thu Dec 05, 2024 3:01 pm
Student Social/Study Group
This forum topic is for students to self-organize study groups, etc.
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709 Topics

17656 Posts

Last post 14B discussion swap
by AnaiGutierrez_2B View the latest post
Tue Dec 03, 2024 4:03 pm
Administrative Questions and Class Announcements
Any general non-science questions (software questions/problems, etc.,) and class announcements.
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1921 Topics

10556 Posts

Last post Re: Chemistry Community Points
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Thu Dec 05, 2024 2:35 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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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…
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Wed Dec 13, 2023 10:42 pm

Chem 14A

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