Search found 41 matches

by Drake Choi_1I
Sun Nov 17, 2019 11:36 pm
Forum: Bond Lengths & Energies
Topic: Test 2 Topics
Replies: 39
Views: 208

Re: Test 2 Topics

Thank you so much! I didn't know what to study because I couldn't remember what was on the midterm or not. :)
by Drake Choi_1I
Sun Nov 17, 2019 11:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 9
Views: 21

Re: Bond Angles

I think we will have to memorize the basic ones.
by Drake Choi_1I
Sun Nov 17, 2019 11:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Resonance and VSEPR
Replies: 9
Views: 21

Re: Resonance and VSEPR

No
by Drake Choi_1I
Sun Nov 17, 2019 11:24 pm
Forum: Ionic & Covalent Bonds
Topic: Study Group
Replies: 8
Views: 48

Re: Study Group

Ok I'll see if my schedule lines up at all!
by Drake Choi_1I
Sun Nov 17, 2019 11:17 pm
Forum: Ionic & Covalent Bonds
Topic: Study Group
Replies: 8
Views: 48

Re: Study Group

What days are you planning to study?
by Drake Choi_1I
Wed Nov 13, 2019 3:54 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Diatomic Molecules
Replies: 6
Views: 18

Re: Diatomic Molecules

Sorry I read my work incorrectly, I don't need an answer
by Drake Choi_1I
Wed Nov 13, 2019 3:52 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Diatomic Molecules
Replies: 6
Views: 18

Re: Diatomic Molecules

When calculating the molar mass of 2 moles , I calculated the 14.0067 x 4 because I thought it was equivalent to 4 nitrogen atoms. Can someone explain why I'm wrong please? I know now that the molar mass should have been just 14.0067 x 2.
by Drake Choi_1I
Sat Nov 09, 2019 3:20 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Distorted e- as highly polarizable
Replies: 5
Views: 43

Re: Distorted e- as highly polarizable

What causes electrons to be distorted?
by Drake Choi_1I
Sat Nov 09, 2019 3:18 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: 1A.11
Replies: 3
Views: 28

Re: 1A.11

I remember Balmer is n=2 because it sounds like palms and you have 2 palms :)
by Drake Choi_1I
Sat Nov 09, 2019 3:09 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Best Way To Study?
Replies: 53
Views: 203

Re: Best Way To Study?

Doing all the homework definitely helped me prepare for the midterm.
by Drake Choi_1I
Sat Nov 09, 2019 3:05 pm
Forum: Ionic & Covalent Bonds
Topic: Bond Strength
Replies: 12
Views: 37

Re: Bond Strength

Ionic bonds are stronger because of the contrast in electronegativity.
by Drake Choi_1I
Sat Nov 09, 2019 3:03 pm
Forum: Student Social/Study Group
Topic: Test 2
Replies: 3
Views: 40

Re: Test 2

I might be down
by Drake Choi_1I
Sun Nov 03, 2019 1:09 am
Forum: Bond Lengths & Energies
Topic: bond length
Replies: 6
Views: 34

Re: bond length

Also, triple bonds are shorter and stronger than double bonds :)
by Drake Choi_1I
Sun Nov 03, 2019 1:06 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizable vs Polarizing
Replies: 6
Views: 36

Re: Polarizable vs Polarizing

Covalent character is a measure of how little a bond is polarized.
by Drake Choi_1I
Sun Nov 03, 2019 1:02 am
Forum: Formal Charge and Oxidation Numbers
Topic: When to calculate formal charge
Replies: 7
Views: 35

Re: When to calculate formal charge

Debora Fernandez Clemente_ 4H wrote:When determining the most stable structure do you choose the Lewis structure with the least formal charges on each atom?
Yes that is correct. Hope this helps! :)
by Drake Choi_1I
Sat Nov 02, 2019 3:55 pm
Forum: Ionic & Covalent Bonds
Topic: covalent character of ionic bonds
Replies: 4
Views: 22

Re: covalent character of ionic bonds

Is covalent character the tendency of an atom to attract electrons to itself?
by Drake Choi_1I
Sat Nov 02, 2019 3:47 pm
Forum: Resonance Structures
Topic: Delocalization
Replies: 4
Views: 27

Re: Delocalization

What exactly are resonance structures? All I know is that they are brought up when delocalization occurs.
by Drake Choi_1I
Sat Oct 26, 2019 1:45 pm
Forum: Ionic & Covalent Bonds
Topic: ionization
Replies: 8
Views: 37

Re: ionization

Removing the first electron results in a positive charge. This charge has more attraction to the electron, thus making removing the second electron more difficult.
by Drake Choi_1I
Sat Oct 26, 2019 1:32 pm
Forum: Trends in The Periodic Table
Topic: Ionization energy
Replies: 12
Views: 63

Re: Ionization energy

The atomic radius generally increases from right to left across a group. It also normally increases top to bottom within a group. I use the periodic table and the inverse relationship between atomic radius and ionization energy to help with ionization energy problems.
by Drake Choi_1I
Sat Oct 26, 2019 1:29 pm
Forum: Student Social/Study Group
Topic: Study Tips
Replies: 50
Views: 343

Re: Study Tips

Watching youtube videos from Crash Course helped me a lot in high school when reviewing concepts. When I was looking for more specific review, I would search for certain topics on Khan academy.
by Drake Choi_1I
Sat Oct 26, 2019 1:26 pm
Forum: Lewis Structures
Topic: Knowing bond types
Replies: 2
Views: 29

Re: Knowing bond types

The acronym HONC helps me with bonds. Hydrogen (H) prefers 1 bond, Oxygen (O) prefers 2 bonds, Nitrogen (N) prefers 3 bonds, and Carbon (C) prefers 4 bonds.
by Drake Choi_1I
Sat Oct 26, 2019 1:22 pm
Forum: Ionic & Covalent Bonds
Topic: Cation
Replies: 23
Views: 114

Re: Cation

A helpful way to remember is to see the "t" in cation as a plus!
by Drake Choi_1I
Sat Oct 26, 2019 1:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Same spin
Replies: 10
Views: 53

Re: Same spin

Thank you for the clarification! :)
by Drake Choi_1I
Sat Oct 26, 2019 1:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Format
Replies: 11
Views: 95

Re: Midterm Format

Does anyone know if there will be mutiple choice? Or will it solely be problems?
by Drake Choi_1I
Sat Oct 19, 2019 12:49 pm
Forum: Properties of Light
Topic: Midterm Exam
Replies: 21
Views: 153

Re: Midterm Exam

Is there going to be a curve for the midterm? Or is grade based on raw score?
by Drake Choi_1I
Sat Oct 19, 2019 12:48 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: how to prepare
Replies: 22
Views: 101

Re: how to prepare

I also find that attempting to do the homework and then looking at the book when you are stuck has worked better for me than simply reading the book before doing homework problems.
by Drake Choi_1I
Sat Oct 19, 2019 12:42 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Same spin
Replies: 10
Views: 53

Re: Same spin

When drawing spin, is there a reason why only half of the arrow point is used?
by Drake Choi_1I
Sat Oct 19, 2019 12:40 pm
Forum: Photoelectric Effect
Topic: 1B 15 Part C
Replies: 4
Views: 37

Re: 1B 15 Part C

Thank you Maeve! This helped a lot.
by Drake Choi_1I
Wed Oct 16, 2019 3:24 pm
Forum: Photoelectric Effect
Topic: 1B 15 Part C
Replies: 4
Views: 37

Re: 1B 15 Part C

Part A asks, "What is the wavelength of the ejected electron?" The velocity of the electron that is emitted from a metallic surface by a photon is 3.6 x 10^3 km.s^-1. Part B states no electrons are emitted from the surface of the metal until the frequency of the radiation reaches 2.50x10^1...
by Drake Choi_1I
Wed Oct 16, 2019 12:19 pm
Forum: DeBroglie Equation
Topic: 1B.9 HW Question
Replies: 8
Views: 68

Re: 1B.9 HW Question

Thank you! This helped a lot :)
by Drake Choi_1I
Wed Oct 16, 2019 11:25 am
Forum: DeBroglie Equation
Topic: 1B.9 HW Question
Replies: 8
Views: 68

Re: 1B.9 HW Question

When converting from photons to moles, would it be 6.022 x 10^23 photons to 1 mole?
by Drake Choi_1I
Sun Oct 13, 2019 2:57 pm
Forum: Administrative Questions and Class Announcements
Topic: How to check how many points I have this week for posting on Chemistry Community?
Replies: 11
Views: 61

Re: How to check how many points I have this week for posting on Chemistry Community?

I still don't know what to post to chemistry community. Is it a good idea to ask about homework questions or concepts? I feel like a lot of the questions I would ask are already answered.
by Drake Choi_1I
Sun Oct 13, 2019 2:53 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 166
Views: 100968

Re: Rusty on High School Chem [ENDORSED]

Is there anyone else that hasn't done chemistry since sophomore year? I did not even do AP, so my knowledge of chemistry in very minimal.
by Drake Choi_1I
Sun Oct 13, 2019 2:49 pm
Forum: Properties of Light
Topic: speed of light
Replies: 10
Views: 40

Re: speed of light

I remember learning in physics something about mediums and light. I know that a vacuum is where light can travel fastest. What is the next fastest medium?
by Drake Choi_1I
Sun Oct 13, 2019 2:47 pm
Forum: Student Social/Study Group
Topic: Turning in Extra HW problems
Replies: 10
Views: 78

Re: Turning in Extra HW problems

Is it effective to do the whole homework list? Or should I focus on doing a few problems from each section?
by Drake Choi_1I
Sun Oct 13, 2019 2:44 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 Grading
Replies: 12
Views: 136

Re: Test 1 Grading

Will the grading on test 1 be similar to AP style grading? Certain lines of work that demonstrate what you know can get you partial points?
by Drake Choi_1I
Fri Oct 04, 2019 11:45 am
Forum: Student Social/Study Group
Topic: Study Tips
Replies: 50
Views: 343

Re: Study Tips

Is it a good idea to review online modules before lectures so that I can be familiar with what is going to be lectured on? Or should I review after I have had the lecture? Thank you :)
by Drake Choi_1I
Fri Oct 04, 2019 11:42 am
Forum: Administrative Questions and Class Announcements
Topic: First Test in Discussion
Replies: 13
Views: 147

Re: First Test in Discussion

How can I make sure that I am getting a variety of homework problems done without doing all of them? I want to do problems that will help prepare me for the test without doing too many and frying my brain.
by Drake Choi_1I
Fri Oct 04, 2019 11:35 am
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 63
Views: 18508

Re: Final Jitters

When studying, is there a schedule anyone here has for breaks? I cannot focus as long as I used to lol and can't figure how long I should study for, when to take breaks, and for how long. Does anyone have tips on how to manage time better while studying?
by Drake Choi_1I
Thu Oct 03, 2019 12:13 pm
Forum: SI Units, Unit Conversions
Topic: Sig Fig Mistakes
Replies: 17
Views: 127

Re: Sig Fig Mistakes

Can someone please explain the sig fig rules regarding addition and subtraction as well as multiplication and division? I forget which one is about having the same amount of decimal places and which needs the same amount of sig figs. Thank you!
by Drake Choi_1I
Mon Sep 30, 2019 12:05 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Question E.9 - Writing Molecular Formula + Mole Calculations
Replies: 6
Views: 75

Re: Question E.9 - Writing Molecular Formula + Mole Calculations

Does anyone know if we will have to memorize the basic polyatomic ions for tests?

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