Search found 41 matches

by Massimo_Capozza_1H
Thu Nov 26, 2020 5:16 pm
Forum: Electronegativity
Topic: Periodic Table Trend
Replies: 27
Views: 251

Re: Periodic Table Trend

Hi if found this image very helpful to study periodic trends

https://www.thoughtco.com/chart-of-periodic-table-trends-608792
by Massimo_Capozza_1H
Thu Nov 26, 2020 5:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shape Names
Replies: 31
Views: 118

Re: Shape Names

Hi I found this website very useful to study molecular geometry

http://intro.chem.okstate.edu/1314F00/Lecture/Chapter10/VSEPR.html
by Massimo_Capozza_1H
Thu Nov 26, 2020 5:11 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Clarification on ligands
Replies: 4
Views: 10

Re: Clarification on ligands

Just like there are cations and anions, is there an opposite to ligands?
by Massimo_Capozza_1H
Thu Nov 26, 2020 5:07 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Chart
Replies: 9
Views: 29

Re: VSEPR Chart

Hi I found this really good website to study the VSEPR chart.

http://intro.chem.okstate.edu/1314F00/Lecture/Chapter10/VSEPR.html
by Massimo_Capozza_1H
Thu Nov 26, 2020 5:01 pm
Forum: Electronegativity
Topic: What determine bond strength?
Replies: 4
Views: 19

Re: What determine bond strength?

Yes, you're completely correct in that size contributes a lot to how strong a bond is. Larger radii means larger distance between nuclei, which creates a bond that is easier to break. Also, bond order is extremely important in determining bond strength. Triple bonds are a lot stronger than double b...
by Massimo_Capozza_1H
Thu Nov 19, 2020 1:51 am
Forum: Formal Charge and Oxidation Numbers
Topic: Oxidation Number
Replies: 11
Views: 68

Re: Oxidation Number

America Alvarado wrote:So are the oxidation numbers usually given? or are we suppose to know that Oxygen has an oxidation number of -2?


I am also confused about this. Will we be given the oxidation numbers, or do we have to memorize some of them?
by Massimo_Capozza_1H
Thu Nov 19, 2020 1:44 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Formulas and Molecular shapes
Replies: 4
Views: 19

Re: Formulas and Molecular shapes

I think those are right, and I'd also assume we have to memorize them for the final but I'm not completely sure.
by Massimo_Capozza_1H
Thu Nov 19, 2020 1:41 am
Forum: Ionic & Covalent Bonds
Topic: How to determine which molecule is more ionic?
Replies: 11
Views: 61

Re: How to determine which molecule is more ionic?

I think it depends heavily on the electronegativity. Electronegativity increases from left to right of the table and increases going up the table. I would use this rule of thumb to help figure these problems out.
by Massimo_Capozza_1H
Tue Nov 10, 2020 8:07 pm
Forum: Bond Lengths & Energies
Topic: reactive
Replies: 10
Views: 45

Re: reactive

The energy required to break a bond comes down to its stability. A single bond is less stable than a double bond; a double bond is less stable than a triple bond, and so on. Electrons are more restricted when there are more bonds present. Therefore, it will require more energy to break those bonds.
by Massimo_Capozza_1H
Tue Nov 10, 2020 8:03 pm
Forum: Student Social/Study Group
Topic: Exercising Our Minds and Bodies
Replies: 84
Views: 246

Re: Exercising Our Minds and Bodies

I would say one of the best things you can do to rest your mind and body is take a quick 30-45 min power nap. Try not to sleep any longer because you will feel tired and drowsy. I take naps almost every day, and they really help.
by Massimo_Capozza_1H
Tue Nov 10, 2020 8:01 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 Questions
Replies: 16
Views: 77

Re: Midterm 2 Questions

Will we be provided any more helpful sheets like the equation sheet and periodic table?
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:59 pm
Forum: Student Social/Study Group
Topic: Test Anxiety
Replies: 62
Views: 229

Re: Test Anxiety

I think everyone gets test anxiety. I was super anxious for the last midterm and studied non-stop because I was anxious about my grade. In reality, however, the test wasn't as bad as I thought it was gonna be. While taking the exam, I played some of my favorite music in the background to help keep m...
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:56 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s before 3d?
Replies: 6
Views: 54

Re: 4s before 3d?

I'd say one of the easiest ways to remember which orbitals have the highest energy is by remembering the electron configuration chart with arrows. Basically, the energy increases as you move down the arrows.
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:43 pm
Forum: Resonance Structures
Topic: Resonance structures and stability
Replies: 4
Views: 21

Re: Resonance structures and stability

I think it's because the overall energy of a molecule is less. After all, its electrons are occupied in greater volumes. Basically, the electrons are more equally shared in a resonance structure; therefore, it has less energy. That was my understanding of resonance structures.
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:33 pm
Forum: Administrative Questions and Class Announcements
Topic: 14B Next Quarter
Replies: 8
Views: 105

Re: 14B Next Quarter

If it doesn't fit in our schedule can we still take 14B spring semester or do we have to wait?
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:30 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Explaining Electron Configuration
Replies: 4
Views: 15

Re: Explaining Electron Configuration

I think the easiest way to understand this concept is by remembering the electron configuration chart. I suggest practice writing this chart down repeatedly; then, once you have it memorized, you can write it down during the test.
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:20 pm
Forum: Electronegativity
Topic: Electronegativity values
Replies: 4
Views: 17

Re: Electronegativity values

Should we remeber these values, or will we be given what they correspond to?
by Massimo_Capozza_1H
Tue Nov 10, 2020 7:19 pm
Forum: Dipole Moments
Topic: Interactions Between Ions and Molecules
Replies: 7
Views: 32

Re: Interactions Between Ions and Molecules

Ion ion interactions are stronger because ions are fully charged. An example is NaCl, Na has a full +1 charge, and Cl has a full -1 charge. Ions are fully charged because the cation loses its electrons, and the anion gains electrons. These large and opposite charge values create a big attraction. T...
by Massimo_Capozza_1H
Wed Oct 28, 2020 9:24 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Midterm Questions
Replies: 4
Views: 49

Re: Midterm Questions

Is there 12 multiple choice and only 1 short answer with several parts?
by Massimo_Capozza_1H
Wed Oct 28, 2020 9:23 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: position units
Replies: 19
Views: 100

Re: position units

You can't use the uncertainty equation to find mass or velocity, correct? Do you have to use wavelength=h/p?
by Massimo_Capozza_1H
Wed Oct 28, 2020 9:21 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg Equation
Replies: 9
Views: 50

Re: Rydberg Equation

n2 represents the excited state the electron is in, while n1 represents the energy level that the electron returns to. n2 is always greater than n1. I may be wrong, but that's the way I think about the Rydberg Equation.
by Massimo_Capozza_1H
Mon Oct 26, 2020 7:55 pm
Forum: Balancing Chemical Reactions
Topic: Text Book Problems
Replies: 3
Views: 26

Re: Text Book Problems

tamara masri_3D wrote:Hello! I think someone asked this in one of Professor Lavelle's office hours and he said we're not expected to know the nomenclature stuff yet. I don't think it will be on the first midterm.


Thanks!
So basically, all named molecules will be paired with their appropriate molecular formulas?
by Massimo_Capozza_1H
Mon Oct 26, 2020 7:40 pm
Forum: Balancing Chemical Reactions
Topic: Text Book Problems
Replies: 3
Views: 26

Text Book Problems

For question F3 in the textbook, it asks what the formula for nitric acid is. Will we have to memorize what atoms are present in certain molecules, or are we going to be tested on our ability to right an empirical/molecular formula based on a molecule's name? F3 a) Write the formula for nitric acid....
by Massimo_Capozza_1H
Mon Oct 26, 2020 7:40 pm
Forum: Balancing Chemical Reactions
Topic: Text Book Problems
Replies: 2
Views: 34

Text Book Problems

For question F3 in the textbook, it asks what the formula for nitric acid is. Will we have to memorize what atoms are present in certain molecules, or are we going to be tested on our ability to right an empirical/molecular formula based on a molecule's name? F3 a) Write the formula for nitric acid....
by Massimo_Capozza_1H
Mon Oct 19, 2020 11:56 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Difference in Equations
Replies: 4
Views: 43

Re: Difference in Equations

Does it matter which equation we use on the midterm? Since they are related, you can use either equation to answer certain problems, but is Dr. Lavelle picky on which one we use on tests?
by Massimo_Capozza_1H
Mon Oct 19, 2020 11:51 pm
Forum: Einstein Equation
Topic: Kinetic Energy of an Electron
Replies: 4
Views: 34

Re: Kinetic Energy of an Electron

I think E=mc 2 tries to describe the relationship between mass and energy. Basically, what einsteins equation is saying is that mass (matter) and energy are interchangeable, and they are the same thing. On the other side of things, the basic equation KE=1/2mv 2 is just telling you the kinetic energy...
by Massimo_Capozza_1H
Mon Oct 19, 2020 11:42 pm
Forum: DeBroglie Equation
Topic: E=pc and E=pv
Replies: 10
Views: 78

Re: E=pc and E=pv

This is a general question on the course; I just wasn't sure where to ask.

Will we be given an equation and mathematical constant sheet for the midterm and final exams, or should I remember all the equations and constants we have learned in these units so far?
by Massimo_Capozza_1H
Mon Oct 19, 2020 11:39 pm
Forum: DeBroglie Equation
Topic: standing circular wave model
Replies: 7
Views: 80

Re: standing circular wave model

When talking about the standing circular wave model, does this model show the general "path" of the electron as it circles the atom's nucleus? I understand that electrons have wave-like properties, but it is also a physical particle, so does the circular wave model describe its orbit?
by Massimo_Capozza_1H
Mon Oct 19, 2020 11:35 pm
Forum: Administrative Questions and Class Announcements
Topic: Where can I buy a webcam for a reasonable price?
Replies: 60
Views: 924

Re: Where can I buy a webcam for a reasonable price?

I think Amazon has the best prices for webcams. I was able to buy a decent webcam for about $17.48 after tax with free shipping 2-day shipping through Amazon Prime. I will attach a link to the webcam below. https://www.amazon.com/gp/product/B087C7C17P/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&p...
by Massimo_Capozza_1H
Wed Oct 14, 2020 1:41 pm
Forum: Significant Figures
Topic: Sig Fig Process
Replies: 13
Views: 103

Re: Sig Fig Process

I forget how you determine what the best number of sig figs to round to at the end of a question is, based on the numbers you are given. Can anyone help clarify this for me?
by Massimo_Capozza_1H
Wed Oct 14, 2020 1:39 pm
Forum: Properties of Light
Topic: Type of light and electron energy levels
Replies: 3
Views: 57

Re: Type of light and electron energy levels

Can an atom only admit three different and unique frequencies of light when an electron is excited and falls back to lower energy levels (1 for each series; Lyman, Balmer, and UV?)
by Massimo_Capozza_1H
Wed Oct 14, 2020 1:33 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Identifying n1 and n2
Replies: 4
Views: 60

Re: Identifying n1 and n2

When would this equation be applicable, or in what type of question would we use this formula?
by Massimo_Capozza_1H
Wed Oct 14, 2020 1:31 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectra Lecture question
Replies: 5
Views: 49

Re: Atomic Spectra Lecture question

Does anyone have a video that will summarize the atomic spectra. I am very lost on this topic.
by Massimo_Capozza_1H
Wed Oct 14, 2020 1:26 pm
Forum: Properties of Light
Topic: Photoelectric spectrum
Replies: 24
Views: 149

Re: Photoelectric spectrum

Does anyone have a good video that summarises the photoelectric spectrum?
by Massimo_Capozza_1H
Tue Oct 06, 2020 10:12 pm
Forum: Limiting Reactant Calculations
Topic: Textbook Question M19)
Replies: 5
Views: 45

Re: Textbook Question M19)

I have a question on the textbook questions themselves. Where can we find which problems to do, and are they collected for a grade? If so where do we submit our answers?
by Massimo_Capozza_1H
Tue Oct 06, 2020 10:11 pm
Forum: Empirical & Molecular Formulas
Topic: Sapling Hw Week 1 #10
Replies: 20
Views: 250

Re: Sapling Hw Week 1 #10

Does anyone know what place we should round the final percentage? I'm confident I have the right answer, but every time I plug it in the system says I got it wrong.
by Massimo_Capozza_1H
Tue Oct 06, 2020 10:08 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8208
Views: 1433850

Re: Post All Chemistry Jokes Here

What do you call a clown in jail?
A Silicon!
by Massimo_Capozza_1H
Tue Oct 06, 2020 9:51 pm
Forum: Balancing Chemical Reactions
Topic: Periodic Table
Replies: 50
Views: 406

Re: Periodic Table

Will the Periodic Table we receive on tests and activities have the electronegativity and other more specific details about certain elements?
by Massimo_Capozza_1H
Tue Oct 06, 2020 9:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 188
Views: 14309

Re: Advice from a Medical Student - Part II [ENDORSED]

Thanks so much for sharing your advice and story! When did you get involved in volunteer work, extracurriculars, and research, etc? Also, which of those areas do medical schools look more for during their admissions process.

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