CHEMISTRY COMMUNITY

Review of Chemical & Physical Principles

Topics

Posts

Last post

SI Units, Unit Conversions
Moderators: Chem_Mod, Chem_Admin
Topics: 788

788 Topics

4968 Posts

Last post Re: Topics on the Final
by 105561735 View the latest post
Sun Dec 10, 2023 10:51 am
Significant Figures
Moderators: Chem_Mod, Chem_Admin
Topics: 649

649 Topics

4120 Posts

Last post Re: Sig Fig Rules
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:21 am
Accuracy, Precision, Mole, Other Definitions
Moderators: Chem_Mod, Chem_Admin
Topics: 623

623 Topics

3423 Posts

Last post Re: Fundamentals E question 9…
by Brian Huynh 2L View the latest post
Sat Dec 09, 2023 2:13 am
Molarity, Solutions, Dilutions
Moderators: Chem_Mod, Chem_Admin
Topics: 1006

1006 Topics

4032 Posts

Last post Re: Textbook E15
by Chem_Mod View the latest post
Tue Dec 12, 2023 3:40 pm
Empirical & Molecular Formulas
Moderators: Chem_Mod, Chem_Admin
Topics: 1085

1085 Topics

4703 Posts

Last post Re: Theoretical yield
by Sandra Espinoza 3A View the latest post
Sun Dec 10, 2023 10:07 pm
Balancing Chemical Reactions
Moderators: Chem_Mod, Chem_Admin
Topics: 637

637 Topics

3891 Posts

Last post Re: Arrow direction versus eq…
by Alyssa Bercero 3H View the latest post
Sat Jan 27, 2024 3:53 pm
Limiting Reactant Calculations
Moderators: Chem_Mod, Chem_Admin
Topics: 1085

1085 Topics

4667 Posts

Last post Re: Limiting Reactants Questi…
by 506047744 View the latest post
Sun Dec 10, 2023 1:15 am

The Quantum World

Topics

Posts

Last post

Properties of Light
$c=\lambda v$
Moderators: Chem_Mod, Chem_Admin
Topics: 2609

2609 Topics

12159 Posts

Last post Re: Weeks 2, 3, 4 - Question …
by Chem_Mod View the latest post
Tue Dec 12, 2023 3:37 pm
Properties of Electrons
Moderators: Chem_Mod, Chem_Admin
Topics: 1258

1258 Topics

5162 Posts

Last post Re: Ions vs. Cations Electron…
by 205957986 View the latest post
Sun Dec 10, 2023 10:07 pm
Einstein Equation
$E=hv$
Moderators: Chem_Mod, Chem_Admin
Topics: 498

498 Topics

2515 Posts

Last post Re: When to Use
by leelababakhyi2F View the latest post
Sat Dec 09, 2023 1:25 am
*Black Body Radiation
(Wien's law: $T\lambda _{max}=\frac{1}{5}C_{2}$ )
Moderators: Chem_Mod, Chem_Admin
Topics: 149

149 Topics

708 Posts

Last post Re: Wiens Law
by 305878818 View the latest post
Sun Dec 10, 2023 7:48 pm
Photoelectric Effect
Moderators: Chem_Mod, Chem_Admin
Topics: 1593

1593 Topics

6518 Posts

Last post Re: Planks Constnat
by Shaniya Kerns 4D View the latest post
Mon Dec 11, 2023 12:03 am
Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
H-Atom ( $E_{n}=-\frac{hR}{n^{2}}$ )
Moderators: Chem_Mod, Chem_Admin
Topics: 1552

1552 Topics

5277 Posts

Last post Re: Bohr and constructive vs …
by Sandra Espinoza 3A View the latest post
Sun Dec 10, 2023 7:29 am
DeBroglie Equation
$\lambda=\frac{h}{p}$
Moderators: Chem_Mod, Chem_Admin
Topics: 1148

1148 Topics

4861 Posts

Last post Re: Week 2, 3, 4 Question 13
by Shaniya Kerns 4D View the latest post
Mon Dec 11, 2023 12:28 am
Heisenberg Indeterminacy (Uncertainty) Equation
$\Delta p \Delta x\geq \frac{h}{4\pi }$
Moderators: Chem_Mod, Chem_Admin
Topics: 1116

1116 Topics

3968 Posts

Last post Re: Measuring Complementary P…
by Max Harouni 14B 24W View the latest post
Thu Dec 07, 2023 10:08 pm
*Shrodinger Equation
$H_{\psi }=E_{\psi }$

1-D: $E_{TOTAL}\psi (x)=E_{k}\psi (x)+V(x)\psi(x)=-\frac{h^{2}}{8\pi ^{2}m}\frac{d^{2}\psi(x)}{dx^{2}}+V(x)\psi(x)$
Moderators: Chem_Mod, Chem_Admin
Topics: 474

474 Topics

1662 Posts

Last post Re: Energy needed to eject an…
by Miyown Meeks 2F View the latest post
Sun Dec 10, 2023 7:54 pm
*Particle in a Box
$E_{n}=\frac{h^{2}n^{2}}{8mL^{2}}$
Moderators: Chem_Mod, Chem_Admin
Topics: 76

76 Topics

295 Posts

Last post Re: Particle in a Box and Sch…
by jedricgonzales2I View the latest post
Fri Nov 03, 2023 11:28 pm
Wave Functions and s-, p-, d-, f- Orbitals
Moderators: Chem_Mod, Chem_Admin
Topics: 1652

1652 Topics

6548 Posts

Last post Re: s, p, d, f, orbitals
by Averie Moore 2F View the latest post
Sun Dec 10, 2023 11:25 pm
Quantum Numbers and The H-Atom
Moderators: Chem_Mod, Chem_Admin
Topics: 1024

1024 Topics

3909 Posts

Last post Re: Pauli Exclusion Principle…
by jayannkan2g View the latest post
Sun Dec 10, 2023 4:35 pm
Electron Configurations for Multi-Electron Atoms
Moderators: Chem_Mod, Chem_Admin
Topics: 2063

2063 Topics

7065 Posts

Last post Re: electron configuration of…
by Evangelina_0ca View the latest post
Fri Dec 08, 2023 8:33 pm
Trends in The Periodic Table
Moderators: Chem_Mod, Chem_Admin
Topics: 1412

1412 Topics

6015 Posts

Last post Re: ionization energy
by Isabelle Huerta 2I View the latest post
Sun Dec 10, 2023 11:52 pm

Chemical Bonds

Topics

Posts

Last post

Ionic & Covalent Bonds
Moderators: Chem_Mod, Chem_Admin
Topics: 2291

2291 Topics

10699 Posts

Last post Re: Electrophiles
by 406011420 Dis 1C View the latest post
Wed Jan 24, 2024 8:53 pm
Sigma & Pi Bonds
Moderators: Chem_Mod, Chem_Admin
Topics: 692

692 Topics

3064 Posts

Last post Re: Visualization of bonds
by Eugene Chung 3A View the latest post
Tue Jan 16, 2024 11:11 pm
Lewis Structures
Moderators: Chem_Mod, Chem_Admin
Topics: 3055

3055 Topics

11824 Posts

Last post Re: urea
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:00 am
Resonance Structures
Moderators: Chem_Mod, Chem_Admin
Topics: 1110

1110 Topics

4565 Posts

Last post Re: C3H4 Resonance Structures
by Chem_Mod View the latest post
Mon Dec 11, 2023 8:33 am
Formal Charge and Oxidation Numbers
$FC=V-(L+\frac{S}{2})$
Moderators: Chem_Mod, Chem_Admin
Topics: 839

839 Topics

3967 Posts

Last post Re: Formal Charge and Oxidati…
by Isabelle Huerta 2I View the latest post
Sun Dec 10, 2023 11:57 pm
Octet Exceptions
Moderators: Chem_Mod, Chem_Admin
Topics: 916

916 Topics

3697 Posts

Last post Re: D-orbital elements
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:14 am
Coordinate Covalent Bonds
Moderators: Chem_Mod, Chem_Admin
Topics: 247

247 Topics

1083 Posts

Last post Re: Coordinate Covalent Bonds…
by Isabelle Huerta 2I View the latest post
Sun Dec 10, 2023 11:59 pm
Polarisability of Anions, The Polarizing Power of Cations
Moderators: Chem_Mod, Chem_Admin
Topics: 542

542 Topics

2059 Posts

Last post Re: Connections between Polar…
by TakieraDarrow_2J View the latest post
Sun Dec 10, 2023 11:06 pm
Electronegativity
Moderators: Chem_Mod, Chem_Admin
Topics: 632

632 Topics

3408 Posts

Last post Re: Electronegativity differe…
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:16 am
Dipole Moments
Moderators: Chem_Mod, Chem_Admin
Topics: 1344

1344 Topics

5277 Posts

Last post Re: strongest bonds
by Isabelle Huerta 2I View the latest post
Sun Dec 10, 2023 11:57 pm
Bond Lengths & Energies
Moderators: Chem_Mod, Chem_Admin
Topics: 918

918 Topics

4248 Posts

Last post Re: Boltzmann’s Equation
by Katya Wardhana 2E View the latest post
Wed Feb 21, 2024 1:31 pm

Forces and Liquid Structure

Topics

Posts

Last post

Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Moderators: Chem_Mod, Chem_Admin
Topics: 1046

1046 Topics

3999 Posts

Last post Re: Natural states of element…
by Chem_Mod View the latest post
Tue Dec 12, 2023 3:44 pm
*Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Moderators: Chem_Mod, Chem_Admin
Topics: 31

31 Topics

211 Posts

Last post Re: structural phases
by Chem_Mod View the latest post
Tue Dec 05, 2023 7:16 am

Molecular Shape and Structure

Topics

Posts

Last post

Determining Molecular Shape (VSEPR)
(Polar molecules, Non-polar molecules, etc.)
Moderators: Chem_Mod, Chem_Admin
Topics: 4214

4214 Topics

18309 Posts

Last post Re: Errors in Solutions for 2…
by Chem_Mod View the latest post
Fri Dec 15, 2023 11:44 am
Hybridization
$sp, sp^{2}, sp^{3}, dsp^{3}, d^{2}sp^{3}$
Moderators: Chem_Mod, Chem_Admin
Topics: 2223

2223 Topics

8452 Posts

Last post Re: Hybridization in Lewis St…
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:04 am
*Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Moderators: Chem_Mod, Chem_Admin
Topics: 804

804 Topics

2542 Posts

Last post Re: pi bonds
by Valeria Perez 3J View the latest post
Sun Dec 10, 2023 11:25 pm

Coordination Compounds and their Biological Importance

Topics

Posts

Last post

Naming
Moderators: Chem_Mod, Chem_Admin
Topics: 2151

2151 Topics

8019 Posts

Last post Re: Names of ligands
by 306060519 View the latest post
Sun Mar 17, 2024 7:58 pm
Shape, Structure, Coordination Number, Ligands
Moderators: Chem_Mod, Chem_Admin
Topics: 2703

2703 Topics

9182 Posts

Last post Re: Coordination Number
by Isabelle Huerta 2I View the latest post
Mon Dec 11, 2023 12:11 am
Biological Examples
Moderators: Chem_Mod, Chem_Admin
Topics: 399

399 Topics

1553 Posts

Last post Re: chelating agents
by Sandra Espinoza 3A View the latest post
Sun Dec 10, 2023 10:18 pm
Industrial Examples
Moderators: Chem_Mod, Chem_Admin
Topics: 15

15 Topics

109 Posts

Last post Re: Ligands
by Hansika_Sakshi_2k View the latest post
Sun Dec 10, 2023 10:02 pm
*Stereochemistry
Moderators: Chem_Mod, Chem_Admin
Topics: 22

22 Topics

67 Posts

Last post Re: Notation
by Hannah Cole 3J View the latest post
Sun Dec 10, 2023 6:40 pm
*Crystal Field Theory
Moderators: Chem_Mod, Chem_Admin
Topics: 12

12 Topics

40 Posts

Last post Re: D orbitals vs Regular Orb…
by 006248274 View the latest post
Mon Dec 04, 2023 11:55 am
*Molecular Orbital Theory Applied To Transition Metals
Moderators: Chem_Mod, Chem_Admin
Topics: 45

45 Topics

142 Posts

Last post Re: Complex
by 405972194 View the latest post
Sun Dec 10, 2023 3:55 pm

Acids and Bases

Topics

Posts

Last post

Properties & Structures of Inorganic & Organic Acids
Moderators: Chem_Mod, Chem_Admin
Topics: 771

771 Topics

2976 Posts

Last post Re: 6A.21
by SophieCacdac_3H View the latest post
Tue Jan 30, 2024 4:36 pm
Properties & Structures of Inorganic & Organic Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 166

166 Topics

612 Posts

Last post Re: 5.g.5
by Celine 3E View the latest post
Mon Jan 29, 2024 7:42 pm
Amphoteric Compounds
Moderators: Chem_Mod, Chem_Admin
Topics: 420

420 Topics

1627 Posts

Last post Re: Other autoprotolysis exam…
by Nick Young 1D View the latest post
Mon Jan 29, 2024 4:18 pm
Lewis Acids & Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 1181

1181 Topics

4645 Posts

Last post Re: Problem
by Steve Chung 2E View the latest post
Tue Jan 30, 2024 12:14 am
Bronsted Acids & Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 1163

1163 Topics

3912 Posts

Last post Re: 6D9
by Taylor Aguinaldo 2B View the latest post
Mon Mar 11, 2024 9:01 am
Conjugate Acids & Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 619

619 Topics

2289 Posts

Last post Re: weak conjugate bases/acids
by 105561735 View the latest post
Mon Mar 18, 2024 12:13 am
Acidity & Basicity Constants and The Conjugate Seesaw
Acidity $K_{a}$
Basicity $K_{b}$
The Conjugate Seesaw $K_{a}\times K_{b}=K_{w}$
Moderators: Chem_Mod, Chem_Admin
Topics: 863

863 Topics

2943 Posts

Last post Re: pKa
by Destiny Caldwell 3J View the latest post
Sat Mar 16, 2024 9:51 pm
Calculating pH or pOH for Strong & Weak Acids & Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 1756

1756 Topics

5839 Posts

Last post Re: Textbook 6D.15 Part B
by Vyas_Koduvayur_2B View the latest post
Sat Mar 16, 2024 6:10 pm
Polyprotic Acids & Bases
Moderators: Chem_Mod, Chem_Admin
Topics: 309

309 Topics

1058 Posts

Last post Re: Monoproctic vs. diproctic
by Angelina Tran 2F View the latest post
Tue Feb 20, 2024 4:53 am
Identifying Acidic & Basic Salts
Moderators: Chem_Mod, Chem_Admin
Topics: 595

595 Topics

1989 Posts

Last post Re: relationship of oxoacid?
by 106036120 View the latest post
Sun Mar 17, 2024 12:31 am
Calculating the pH of Salt Solutions
Moderators: Chem_Mod, Chem_Admin
Topics: 413

413 Topics

1528 Posts

Last post Re: Relationship between acid…
by 405696752 View the latest post
Mon Mar 18, 2024 9:56 am
Air Pollution & Acid Rain
Moderators: Chem_Mod, Chem_Admin
Topics: 95

95 Topics

436 Posts

Last post Re: Summary of Material
by Naren Krishnan 2K View the latest post
Sat Feb 03, 2024 7:19 pm

Forum

Topics

Posts

Last post

Chem 14A Uploaded Files (Worksheets, etc.)
Moderators: Chem_Mod, Chem_Admin
Topics: 171

171 Topics

526 Posts

Last post Re: Lexi's and Itzel's Review…
by Chem_Mod View the latest post
Sun Dec 10, 2023 12:42 pm
Student Social/Study Group
This forum topic is for students to self-organize study groups, etc.
Moderators: Chem_Mod, Chem_Admin
Topics: 688

688 Topics

17601 Posts

Last post Re: Post All Chemistry Jokes …
by 105561735 View the latest post
Mon Mar 18, 2024 12:22 am
Administrative Questions and Class Announcements
Any general non-science questions (software questions/problems, etc.,) and class announcements.
Moderators: Chem_Mod, Chem_Admin
Topics: 1808

1808 Topics

10298 Posts

Last post Re: Thank you :-)
by Chem_Mod View the latest post
Tue Mar 19, 2024 6:15 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).
Moderators: Chem_Mod, Chem_Admin
Topics: 528

528 Topics

3137 Posts

Last post Re: Electronic Configurations
by marcelnajjar View the latest post
Thu Feb 01, 2024 2:02 pm

*Aqueous Equilibria

Topics

Posts

Last post

*Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Moderators: Chem_Mod, Chem_Admin
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
Moderators: Chem_Mod, Chem_Admin
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
Moderators: Chem_Mod, Chem_Admin
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
Moderators: Chem_Mod, Chem_Admin
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

Who is online