Search found 57 matches

by MTanikella_1C
Thu Jan 16, 2020 3:40 pm
Forum: Ideal Gases
Topic: Topics on Test 1
Replies: 35
Views: 134

Re: Topics on Test 1

Test 1 will most likely cover the entirety of chemical equilibrium and part of outline 2.
by MTanikella_1C
Mon Dec 09, 2019 5:56 am
Forum: Amphoteric Compounds
Topic: Memorization?
Replies: 4
Views: 55

Re: Memorization?

Memorizing the amphoteric oxides is really helpful!
by MTanikella_1C
Mon Dec 09, 2019 5:54 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Content of the final
Replies: 10
Views: 131

Re: Content of the final

Dr. Lavelle didn’t really emphasize or focus on bond order so I don’t think we will be expected to know this concept for the final.
by MTanikella_1C
Mon Dec 09, 2019 5:53 am
Forum: Bronsted Acids & Bases
Topic: Strong Acids and Bases
Replies: 6
Views: 47

Re: Strong Acids and Bases

There is a table in the textbook and Dr. Lavelle also mentioned them during lecture! Strong acids are HI, H2SO4, HCl, HBr, HNO3, HClO4 and strong bases are group 1 and group 2 oxides and hydroxides excluding magnesium.
by MTanikella_1C
Mon Dec 09, 2019 5:50 am
Forum: Student Social/Study Group
Topic: Practice Final
Replies: 17
Views: 230

Re: Practice Final

Lyndon’s review session helped with clarifying concepts covered in his packet which was just as effective as practice tests!
by MTanikella_1C
Sat Nov 30, 2019 3:51 am
Forum: Student Social/Study Group
Topic: Preparing for the final
Replies: 25
Views: 155

Re: Preparing for the final

As everyone has mentioned, youtube has some really useful videos for understanding the concepts we cover during lecture. Exposing yourself to as many problems as you can will be very beneficial because it will solidify your understanding of the topics. In addition, I think that reworking problems ca...
by MTanikella_1C
Sat Nov 30, 2019 3:43 am
Forum: Air Pollution & Acid Rain
Topic: Final
Replies: 8
Views: 350

Re: Final

In lecture, Lavelle recommended going through the acid rain problems in the textbook so I think we should be familiar with the biological applications of what we learned in the context of acid rain and air pollution.
by MTanikella_1C
Sat Nov 30, 2019 3:40 am
Forum: General Science Questions
Topic: study tips for the final
Replies: 3
Views: 34

Re: study tips for the final

I would definitely recommend reworking all the assigned homework problems and making sure you know the concepts behind these questions. The midterm is also a valuable resource to review again!
by MTanikella_1C
Thu Nov 28, 2019 8:28 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Bronsted vs. Lewis Acids and Bases
Replies: 4
Views: 31

Re: Bronsted vs. Lewis Acids and Bases

A Bronsted acid is a proton donor and a Bronsted base is a proton acceptor. A Lewis acid is an electron pair acceptor while a Lewis base is an electron pair donor.
by MTanikella_1C
Thu Nov 28, 2019 3:12 pm
Forum: Naming
Topic: 9C3d
Replies: 4
Views: 56

Re: 9C3d

It does not make a difference because both (OH2) and (H2O) represent the same molecule; (OH2) simply highlights the interaction between the lone pair on the oxygen and the central metal atom.
by MTanikella_1C
Sun Nov 24, 2019 11:58 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: melting point
Replies: 8
Views: 35

Re: melting point

The melting point would most likely decrease.
by MTanikella_1C
Sun Nov 24, 2019 11:57 pm
Forum: Hybridization
Topic: 2F.5
Replies: 3
Views: 24

Re: 2F.5

Hybridization is determined using the VSEPR theory and considering the molecular shape of the molecule. Based on this, BeCl2 has an sp hybridization. BH3 has an sp2 hybridization. BH42 has an sp3 hybridization and SiF4 has an sp3 hybridization.
by MTanikella_1C
Sun Nov 24, 2019 11:53 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: types of bonds
Replies: 14
Views: 260

Re: types of bonds

Yes a triple bond consists of one sigma bond and two pi bonds
by MTanikella_1C
Sun Nov 24, 2019 11:53 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Sigma and Pi Bonds
Replies: 15
Views: 79

Re: Sigma and Pi Bonds

Order does not matter as long as you state that there is one sigma and two pi bonds
by MTanikella_1C
Sun Nov 24, 2019 11:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Final
Replies: 10
Views: 45

Re: Final

The final is cumulative!
by MTanikella_1C
Sun Nov 24, 2019 11:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AXE Format
Replies: 34
Views: 121

Re: AXE Format

If there's only one X and E, the subscript of one is unnecessary.
by MTanikella_1C
Sun Nov 17, 2019 5:42 pm
Forum: Hybridization
Topic: test 2
Replies: 8
Views: 60

Re: test 2

Sigma and pi bonds will be covered on Monday during lecture and they will be on test 2!
by MTanikella_1C
Sun Nov 17, 2019 5:38 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Radicals for VSEPR
Replies: 3
Views: 21

Re: Radicals for VSEPR

There are no specific rules pertaining to radicals in VSEPR theory. This means that one lone electron would be considered the same as one lone pair (in terms of regions) when determining the total regions of electron density.
by MTanikella_1C
Sun Nov 17, 2019 5:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Repulsion
Replies: 6
Views: 31

Re: Repulsion

The strength of repulsion is as follows: lone pair-lone pair>lone pair- bonding pair> bonding pair- bonding pair. This allows us to conclude that lone pairs have the highest repulsion and therefore affect the bond angles, usually resulting in a slight decrease in the angles overall.
by MTanikella_1C
Sun Nov 17, 2019 5:28 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Do we have to memorize the names of shapes and/or the bond angles?
Replies: 7
Views: 40

Re: Do we have to memorize the names of shapes and/or the bond angles?

Test 2 covers Outline 4 and pulls from concepts covered in Outline 3, specifically 3F.
by MTanikella_1C
Sun Nov 17, 2019 5:25 pm
Forum: Sigma & Pi Bonds
Topic: Double bond
Replies: 15
Views: 107

Re: Double bond

A double bond stabilizes the structure by bringing the formal charge closer to or equal to 0. A Lewis structure is most stable when the central atom has a formal charge of 0 and in some cases, a double bond is needed to achieve this.
by MTanikella_1C
Sun Nov 17, 2019 5:03 pm
Forum: Trends in The Periodic Table
Topic: trends on test 2
Replies: 4
Views: 46

Re: trends on test 2

Although test 2 may not focus on periodic trends specifically, it is useful to know these trends as they are helpful in determining the behavior, structure and overall polarity of molecules.
by MTanikella_1C
Sun Nov 10, 2019 7:08 pm
Forum: Student Social/Study Group
Topic: Midterm Average
Replies: 12
Views: 130

Re: Midterm Average

I believe he will be releasing the average during lecture at some point this coming week.
by MTanikella_1C
Sun Nov 10, 2019 7:06 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity
Replies: 7
Views: 71

Re: Electronegativity

Electronegativity increases as you go across a period and decreases down a group. It is the measure of how strongly atoms attract bonding electrons to themselves.
by MTanikella_1C
Sun Nov 10, 2019 7:03 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity
Replies: 9
Views: 51

Re: Electronegativity

Electronegativity does follow the same trend as ionization energy and electron affinity. Make sure to remember that there are a few exceptions to the ionization energy trend, but other than that these three properties all share the same trend (increasing across the period and decreasing down a group).
by MTanikella_1C
Sun Nov 10, 2019 7:01 pm
Forum: Trends in The Periodic Table
Topic: Midterm Review Problem 10 d
Replies: 5
Views: 59

Re: Midterm Review Problem 10 d

Oxygen is an exception to the trend because it is easier for oxygen to give up an electron to have a more stable configuration than it is for nitrogen to give up an electron. This is because nitrogen has three electrons in the p orbital, which is relatively more stable than the four electrons oxygen...
by MTanikella_1C
Sun Nov 10, 2019 6:58 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizability Trends
Replies: 4
Views: 22

Re: Polarizability Trends

Polarizability applies to anions and shows that a larger radius (heavier element) correlates with a high polarizability. This is because a larger radius means more electrons and the valence electrons experience a weaker pull from the nucleus. Since it is easier to distort this electron cloud, the po...
by MTanikella_1C
Sun Nov 10, 2019 6:54 pm
Forum: Student Social/Study Group
Topic: Chemistry Youtube Channels
Replies: 8
Views: 60

Re: Chemistry Youtube Channels

Khan Academy and Bozeman Science are also great channels for reference!
by MTanikella_1C
Sun Nov 03, 2019 9:02 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Aufbau vs Hunds
Replies: 6
Views: 39

Re: Aufbau vs Hunds

Aufbau's principle shows the order in which orbitals should be filled while Hund's rule describes that every orbital in a subshell should be occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
by MTanikella_1C
Sun Nov 03, 2019 8:57 pm
Forum: *Particle in a Box
Topic: Particle in A box
Replies: 8
Views: 104

Re: Particle in A box

I don't think it will be necessary to know this concept for the midterm even though it was briefly mentioned in lecture.
by MTanikella_1C
Sun Nov 03, 2019 8:44 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge Shortcut
Replies: 4
Views: 30

Re: Formal Charge Shortcut

Formal charge compares the number of electrons around a "neutral atom" with the number of electrons around an atom in a molecule. It plays a key role in creating relatively stable lewis structures.
by MTanikella_1C
Sun Nov 03, 2019 8:32 pm
Forum: Properties of Light
Topic: Midterm Exam
Replies: 21
Views: 182

Re: Midterm Exam

The midterm will mostly be open ended questions but I think there may be some multiple choice questions as well!
by MTanikella_1C
Sun Nov 03, 2019 8:29 pm
Forum: Electronegativity
Topic: size
Replies: 8
Views: 26

Re: size

Atomic size decreases across the period and increases down the group while electronegativity increases across the period and decreases down the group.
by MTanikella_1C
Sun Oct 27, 2019 7:07 pm
Forum: General Science Questions
Topic: Extra Credit
Replies: 6
Views: 68

Re: Extra Credit

Based on what Dr. Lavelle has said in class, I don't think there is any extra credit opportunity as of now.
by MTanikella_1C
Sun Oct 27, 2019 4:47 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Purpose of the Equation
Replies: 9
Views: 49

Re: Purpose of the Equation

This equation shows the inverse relationship of the uncertainty of momentum and position, therefore proving that it is impossible to be certain of both values at the same time. Essentially, the more precise the momentum is, the less precise position is and vice versa.
by MTanikella_1C
Sun Oct 27, 2019 4:33 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity vs Electron Affinity
Replies: 6
Views: 36

Re: Electronegativity vs Electron Affinity

Electronegativity is a property of an atom that isn't necessarily measurable while electron affinity is a value that can be measured. Both properties have the same periodic trend.
by MTanikella_1C
Sun Oct 27, 2019 1:21 pm
Forum: Student Social/Study Group
Topic: Study Tips
Replies: 58
Views: 725

Re: Study Tips

For any doubts I have with fundamental concepts, khan academy is a great resource! I definitely think that reviewing my lecture notes after class is a really useful way of solidifying the material Dr. Lavelle teaches.
by MTanikella_1C
Sun Oct 27, 2019 1:17 pm
Forum: Ionic & Covalent Bonds
Topic: Midterm Topics Covered
Replies: 7
Views: 63

Re: Midterm Topics Covered

I think the midterm will cover the material Dr. Lavelle talked about in the first few lectures of Chemical Bonding.
by MTanikella_1C
Sun Oct 20, 2019 6:51 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 58
Views: 501

Re: Advice for studying

Reading the relevant chapters, taking notes on the video modules and reviewing the homework problems are all great ways to prepare for the week and get better with the material.
by MTanikella_1C
Sun Oct 20, 2019 6:46 pm
Forum: Properties of Electrons
Topic: Equations for Test
Replies: 9
Views: 74

Re: Equations for Test

All equations will be provided but it will be helpful to familiarize yourself with problems dealing with these equations and the constants involved, such as Planck's constant, the mass of protons, neutrons, electrons, etc.
by MTanikella_1C
Sun Oct 20, 2019 6:16 pm
Forum: Photoelectric Effect
Topic: Speed of Light
Replies: 29
Views: 154

Re: Speed of Light

Yes the speed of light is a constant and you can use 2.998*10^8 or 3.0*10^8 for its value.
by MTanikella_1C
Sun Oct 20, 2019 6:06 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Quantum Numbers
Replies: 3
Views: 20

Re: Quantum Numbers

ml is the third quantum number.
by MTanikella_1C
Sun Oct 20, 2019 6:04 pm
Forum: Photoelectric Effect
Topic: 1B19
Replies: 3
Views: 42

Re: 1B19

As mentioned in the previous post, the de broglie equation should be used for this problem. The calculations will show that there is no difference in the first three significant figures of the wavelength.
by MTanikella_1C
Sat Oct 19, 2019 1:41 pm
Forum: Properties of Electrons
Topic: electron mass
Replies: 8
Views: 58

Re: electron mass

Electron mass is very negligible as mentioned in the posts above, but it is good to know this value just in case!
by MTanikella_1C
Sat Oct 19, 2019 1:37 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Tips for the Midterm
Replies: 10
Views: 69

Re: Tips for the Midterm

The video modules are another great resource for review!
by MTanikella_1C
Sun Oct 13, 2019 5:22 pm
Forum: Significant Figures
Topic: When to apply Sig Figs
Replies: 6
Views: 50

Re: When to apply Sig Figs

Sig figs should only be taken into consideration when you have calculated the final answer. In the steps leading up to the final answer, use the entirety of the values to get an accurate answer. As mentioned, applying the rules of sig figs in between calculations can lead to extremely rounded final ...
by MTanikella_1C
Sun Oct 13, 2019 5:11 pm
Forum: SI Units, Unit Conversions
Topic: Unit conversion
Replies: 15
Views: 182

Re: Unit conversion

The best way to approach a unit conversion question is convert the units given to an SI unit and then use dimensional analysis to get to the desired unit-- in this case, you can convert Angstroms to meters.
by MTanikella_1C
Sun Oct 13, 2019 5:07 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 Grading
Replies: 12
Views: 198

Re: Test 1 Grading

I wasn't aware of getting 10 points for being there but each question on the test is out of a certain number points and partial credit is given even if you have the incorrect answer, so I would assume that grading is similar to AP in that you don't get completely marked off for a wrong answer.
by MTanikella_1C
Sun Oct 13, 2019 5:03 pm
Forum: Administrative Questions and Class Announcements
Topic: KAREN SUN 5-7PM WORKSHOP - DOWNLAOD WORKSHEETS HERE
Replies: 53
Views: 2371

Re: KAREN SUN 5-7PM WORKSHOP - DOWNLAOD WORKSHEETS HERE

These worksheets are really helpful, thank you so much for providing us with this resource!
by MTanikella_1C
Sun Oct 13, 2019 4:59 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 2729

Re: Test 1 [ENDORSED]

Test 1 is worth 50 points and I think that our tests will be graded by the end of the upcoming week.
by MTanikella_1C
Sun Oct 13, 2019 4:54 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Best Way To Study?
Replies: 56
Views: 352

Re: Best Way To Study?

I definitely think the modules are a great way to preview the material from the textbook and to test yourself! I personally like to take notes on the specific topic from the textbook and make mind maps to see how well I've retained the information. Hope that helps!
by MTanikella_1C
Sun Oct 06, 2019 11:40 pm
Forum: SI Units, Unit Conversions
Topic: Si Units
Replies: 3
Views: 23

Re: Si Units

In lecture, Prof. Lavelle also mentioned that nano units are used for experiments conducted in nanoscience and as mentioned, micro units are used more commonly in biology.
by MTanikella_1C
Thu Oct 03, 2019 6:01 pm
Forum: Limiting Reactant Calculations
Topic: 2 Limiting Reagents
Replies: 5
Views: 46

Re: 2 Limiting Reagents

I've had the same question but this is really helpful, thank you!
by MTanikella_1C
Thu Oct 03, 2019 5:51 pm
Forum: Limiting Reactant Calculations
Topic: Alternate way of solving for limiting reactant
Replies: 2
Views: 41

Alternate way of solving for limiting reactant

I had a quick question regarding how to figure out the limiting reactant through another method. This method involves using dimensional analysis to go from grams of each reactant to the moles/grams of product that is produced. My only confusion is, how do we know which product we should be using in ...
by MTanikella_1C
Thu Oct 03, 2019 5:44 pm
Forum: Limiting Reactant Calculations
Topic: Clarification
Replies: 4
Views: 67

Re: Clarification

Yes you're right! Once you figure out which reactant is limiting, that is the information which will determine how much product is produced. Make sure to keep the ratio between the limiting reactant and product in mind too when double checking your work. I hope that helped!
by MTanikella_1C
Thu Oct 03, 2019 5:41 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 168
Views: 102469

Re: Rusty on High School Chem [ENDORSED]

I took AP Chemistry my sophomore year as well so I have run into the same problem of not fully remembering the concepts I learned. I think that the online modules have helped strengthen my fundamentals and doing practice problems from the textbook has solidified these concepts!
by MTanikella_1C
Thu Oct 03, 2019 5:37 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 130
Views: 2911

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

This is so inspiring especially considering the fact that I aspire to attend medical school and figure out what I want to specialize in! I think that the advice you gave on how to set your mindset regardless of whether a class is to your liking or not is very valuable as well!

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