Search found 32 matches

by Alison Trinh 1A
Fri Nov 08, 2019 2:34 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Shape of Molecule
Replies: 5
Views: 22

Shape of Molecule

Just to clarify, differences in characteristics such as boiling point of two different molecules that have the same molecular formula can be attributed to their different shapes?
by Alison Trinh 1A
Sun Nov 03, 2019 8:08 pm
Forum: Sigma & Pi Bonds
Topic: Quantum Numbers
Replies: 7
Views: 30

Quantum Numbers

What is the importance/significance of knowing the quantum numbers of orbitals?
by Alison Trinh 1A
Sun Nov 03, 2019 8:05 pm
Forum: Electronegativity
Topic: which bond
Replies: 4
Views: 25

Re: which bond

If the electronegativity difference is between 1.5 and 2 then it is a mix of the two bonds.
by Alison Trinh 1A
Sun Nov 03, 2019 8:04 pm
Forum: Lewis Structures
Topic: Which element at center of the structure
Replies: 6
Views: 15

Re: Which element at center of the structure

The element with the lowest ionization energy or the element with the least electronegativity is the central atom.
by Alison Trinh 1A
Sun Nov 03, 2019 8:01 pm
Forum: Resonance Structures
Topic: Drawing Resonance Structures
Replies: 3
Views: 28

Re: Drawing Resonance Structures

I believe you can either draw all of the possible structures or draw the "actual structure", which is a hybrid of a molecule's resonance structures.
by Alison Trinh 1A
Sun Nov 03, 2019 7:57 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 9
Views: 39

Re: Electronegativity

It is also helpful to keep in mind that electronegativity increases as it gets closer to Flourine on the periodic table.
by Alison Trinh 1A
Mon Oct 28, 2019 4:36 pm
Forum: Administrative Questions and Class Announcements
Topic: 10/28 Updates due to Fire [ENDORSED]
Replies: 14
Views: 510

Re: 10/28 Updates due to Fire [ENDORSED]

Yes, that is the session I am referring to @Rebecca! Thank you so much!
by Alison Trinh 1A
Mon Oct 28, 2019 2:38 pm
Forum: Administrative Questions and Class Announcements
Topic: 10/28 Updates due to Fire [ENDORSED]
Replies: 14
Views: 510

Re: 10/28 Updates due to Fire [ENDORSED]

Is the midterm review session at 6 today also cancelled? Thank you!
by Alison Trinh 1A
Sun Oct 27, 2019 11:43 pm
Forum: Lewis Structures
Topic: Lone Pairs
Replies: 12
Views: 33

Re: Lone Pairs

Can lone pairs become bonds?
by Alison Trinh 1A
Sun Oct 27, 2019 11:39 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds
Replies: 14
Views: 48

Re: Covalent Bonds

Covalent bonds form between nonmetals whereas ionic bonds are formed when electrons transfer from metal to nonmetal. This is because nonmetals don't form cations and therefore share electrons to form covalent bonds.
by Alison Trinh 1A
Sun Oct 27, 2019 11:33 pm
Forum: Resonance Structures
Topic: Octet
Replies: 13
Views: 63

Re: Octet

The octet rule refers to the covalent bonds that atoms share until a noble gas configuration is reached.
by Alison Trinh 1A
Sun Oct 27, 2019 11:31 pm
Forum: Resonance Structures
Topic: Resonance Structure meaning
Replies: 6
Views: 16

Re: Resonance Structure meaning

Resonance is a blending of structures with the same atom arrangement but different electron arrangements.
by Alison Trinh 1A
Sun Oct 27, 2019 11:27 pm
Forum: Lewis Structures
Topic: Lewis symbols
Replies: 5
Views: 16

Re: Lewis symbols

There should be a total number of 8 valence electrons (think octet rule).
by Alison Trinh 1A
Sun Oct 20, 2019 11:35 pm
Forum: *Shrodinger Equation
Topic: Schrodinger's Equation
Replies: 2
Views: 18

Re: Schrodinger's Equation

What does each variable in the Schrodinger equation shown above represent?
by Alison Trinh 1A
Sun Oct 20, 2019 11:29 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Multi-electron atoms
Replies: 7
Views: 17

Re: Multi-electron atoms

What additional factors effect electron energy in multi-electron atoms?
by Alison Trinh 1A
Sun Oct 20, 2019 11:28 pm
Forum: *Shrodinger Equation
Topic: Schrodinger equation
Replies: 4
Views: 32

Re: Schrodinger equation

How does the Schrodinger equation apply to orbitals?
by Alison Trinh 1A
Sun Oct 20, 2019 11:26 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 50
Views: 260

Re: Advice for studying

Rewatching Dr. Lavelle's video modules, doing the homework/practice problems, and attending step-up sessions have been very helpful for me in terms of studying and trying to really understand the material!
by Alison Trinh 1A
Sun Oct 20, 2019 11:23 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: s-, p-, d- ,f- orbitals
Replies: 10
Views: 62

Re: s-, p-, d- ,f- orbitals

Just to clarify, why are s, p, d, and f orbitals categorized like this? Is it because of their differences in their nodal planes, number of orbitals, energy levels, etc.? Thank you!
by Alison Trinh 1A
Sat Oct 12, 2019 5:06 pm
Forum: Quantum Numbers and The H-Atom
Topic: Frequency
Replies: 15
Views: 111

Re: Frequency

Frequency and energy are directly proportional in that when frequency increases so does the kinetic energy. This causes electrons to be ejected.
by Alison Trinh 1A
Sat Oct 12, 2019 4:38 pm
Forum: Properties of Electrons
Topic: Wave Properties of Electrons
Replies: 4
Views: 40

Re: Wave Properties of Electrons

Also, it was mentioned during lecture that electrons must have wavelike properties because they give rise to a diffraction pattern that result from interacting waves.
by Alison Trinh 1A
Sat Oct 12, 2019 4:30 pm
Forum: Properties of Electrons
Topic: Measuring wavelike properties
Replies: 3
Views: 24

Re: Measuring wavelike properties

The reason the cutoff is 10^-15m is simply because that is because wavelength properties that are anything less than that are not detectable.
by Alison Trinh 1A
Sat Oct 12, 2019 4:19 pm
Forum: Einstein Equation
Topic: Atomic Spectra
Replies: 2
Views: 44

Re: Atomic Spectra

The question may be similar to chemical yield questions asking how the theoretical yield compares to the actual yield. In this case, the question may be asking to compare spectroscopic results (similar to the theoretical yield or what the supposed results are) to what is actually calculated in the e...
by Alison Trinh 1A
Sat Oct 12, 2019 3:45 pm
Forum: Properties of Light
Topic: Intensity of Light
Replies: 4
Views: 29

Re: Intensity of Light

Increasing the intensity of light increases the number of photons. However, to eject an electron, the frequency needs to increase to increase the kinetic energy and thus release/eject the electron. The energy per photon has to be greater or equal to the energy needed to remove an electron.
by Alison Trinh 1A
Thu Oct 03, 2019 10:34 pm
Forum: Limiting Reactant Calculations
Topic: Clarification
Replies: 4
Views: 53

Re: Clarification

Yes the limiting reactant will get you to your theoretical/maximum yield because the limiting reactant limits the total amount of product formed.
by Alison Trinh 1A
Thu Oct 03, 2019 10:12 pm
Forum: Balancing Chemical Reactions
Topic: Combustion
Replies: 12
Views: 78

Re: Combustion

Yes because combustion occurs when there is burning of something in the presence of oxygen. When this occurs, energy is released and carbon dioxide and water are yielded as by products.
by Alison Trinh 1A
Thu Oct 03, 2019 10:08 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 115
Views: 10317

Re: All students read this sig fig post [ENDORSED]

When in doubt about sig figs, pay attention to how many sig figs that the values given in the question have.
by Alison Trinh 1A
Thu Oct 03, 2019 9:56 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Avogadro's Number
Replies: 8
Views: 89

Re: Avogadro's Number

Avogadro's number is used when converting from the number of "things" or "objects" such as atoms or molecules to the chemical amount (the number of moles).
by Alison Trinh 1A
Thu Oct 03, 2019 9:51 pm
Forum: Empirical & Molecular Formulas
Topic: Test Materials
Replies: 13
Views: 91

Re: Test Materials

Regarding test materials, remember to bring a NON-GRAPHING SCIENTIFIC CALCULATOR!!

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