Search found 36 matches

by bellaha3L
Thu Nov 14, 2019 8:12 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: varying VSEPRs
Replies: 7
Views: 26

varying VSEPRs

Is there ever going to be a case where a molecule could have 2 different VSEPR models?
by bellaha3L
Thu Nov 14, 2019 8:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape Name
Replies: 17
Views: 49

Re: Molecular Shape Name

Knowing all of them will be the best I think, test-wise
by bellaha3L
Thu Nov 14, 2019 8:02 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lewis Structures & VSEPR
Replies: 9
Views: 26

Re: Lewis Structures & VSEPR

I think drawing the Lewis structure out first is helpful when determining the VESPR model, but I don't know if it's necessary. However, on tests, they might expect us to draw it out.
by bellaha3L
Thu Nov 14, 2019 8:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 11
Views: 46

Re: Test 2

I think going over outline 4 and doing all the homework problems would be a good way to study.
by bellaha3L
Thu Nov 14, 2019 7:58 pm
Forum: Bond Lengths & Energies
Topic: Bond lengths
Replies: 8
Views: 22

Re: Bond lengths

I think we should know concept wise
by bellaha3L
Thu Nov 07, 2019 8:22 pm
Forum: Ionic & Covalent Bonds
Topic: coordinate covalent bond
Replies: 2
Views: 11

coordinate covalent bond

can someone explain what a coordinate covalent bond is?
by bellaha3L
Thu Nov 07, 2019 8:05 pm
Forum: Lewis Acids & Bases
Topic: lewis acid vs base
Replies: 1
Views: 9

lewis acid vs base

is the lewis acid and base valid for every single compound? or is it just some compounds that have a lewis acid and base?
by bellaha3L
Thu Nov 07, 2019 8:00 pm
Forum: Bond Lengths & Energies
Topic: bond length rules
Replies: 2
Views: 10

bond length rules

are there exceptions to the bond length rules (ie the triple bond is the shortest and strongest while the single bond is the longest and weakest)
by bellaha3L
Thu Nov 07, 2019 7:59 pm
Forum: Bond Lengths & Energies
Topic: dissociation energy
Replies: 6
Views: 27

dissociation energy

how do we calculate the dissociation energy? Is there a formula?
by bellaha3L
Tue Nov 05, 2019 1:29 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: lyman and balmer
Replies: 3
Views: 35

lyman and balmer

I'm still confused on how to use the lyman and balmer series. Can someone please explain this to me?
by bellaha3L
Thu Oct 31, 2019 2:36 pm
Forum: Octet Exceptions
Topic: expanded valence shell confusion
Replies: 3
Views: 29

expanded valence shell confusion

hi! can someone explain to me the expanded valence shell. i'm not sure I understand it completely!
by bellaha3L
Thu Oct 31, 2019 2:32 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons?
Replies: 15
Views: 82

Re: Valence Electrons?

regarding the picture posted, I thought Cl has 7 valence electrons, and the chart says it has 5? I'm pretty sure that chlorine has 7 valence electrons? I could be wrong, unless I'm reading the picture wrong.
by bellaha3L
Thu Oct 31, 2019 2:27 pm
Forum: Lewis Structures
Topic: valence electrons of nonmetals
Replies: 3
Views: 16

valence electrons of nonmetals

how do you figure out the valence electron # of nonmetals/transition metals?
by bellaha3L
Thu Oct 31, 2019 2:24 pm
Forum: Electronegativity
Topic: Electron Negativity vs affinity?
Replies: 5
Views: 24

Re: Electron Negativity vs affinity?

electron affinity is the energy released when electrons are added to a gas phase atom. electronegativity is the electron pulling power of an atom.
by bellaha3L
Thu Oct 31, 2019 2:16 pm
Forum: Lewis Structures
Topic: lewis structures
Replies: 4
Views: 15

lewis structures

Do you think there's going to be different acceptable answers Lewis structure drawings on the midterm?
by bellaha3L
Wed Oct 23, 2019 8:48 pm
Forum: Trends in The Periodic Table
Topic: bond length
Replies: 9
Views: 52

bond length

should we know how to calculate the bond lengths of the lewis structures? is there even a way to do that?
by bellaha3L
Wed Oct 23, 2019 8:41 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: coulomb potential energy
Replies: 4
Views: 28

coulomb potential energy

can someone explain to me the electrostatic/coulomb potential energy and its significance? I know it's proportional to (q1)(q2)/r.
by bellaha3L
Wed Oct 23, 2019 8:31 pm
Forum: Trends in The Periodic Table
Topic: Location of elements
Replies: 12
Views: 71

Re: Location of elements

I think we should know it, and I'm assuming that it'd be really helpful for the tests!
by bellaha3L
Wed Oct 23, 2019 8:26 pm
Forum: Trends in The Periodic Table
Topic: Exceptions
Replies: 3
Views: 24

Re: Exceptions

the ionization energies decrease down a group and increase across a period. however, it's only for gases
by bellaha3L
Wed Oct 23, 2019 8:24 pm
Forum: Trends in The Periodic Table
Topic: Aufbau Principle
Replies: 11
Views: 73

Aufbau Principle

Can someone explain what the Aufbau/building up principle is?
by bellaha3L
Wed Oct 23, 2019 8:20 pm
Forum: Ionic & Covalent Bonds
Topic: Week 4 Homework
Replies: 9
Views: 83

Re: Week 4 Homework

quantum world probably because we only started the chemical bonds section, so some of it might not make sense
by bellaha3L
Wed Oct 16, 2019 11:21 pm
Forum: Properties of Light
Topic: homework 1A.3
Replies: 8
Views: 45

Re: homework 1A.3

when the frequency decreases, the amplitude of the wave also decreases and the wave becomes wider. the electrical field coincides with amplitude.
by bellaha3L
Wed Oct 16, 2019 11:16 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Best Way To Study?
Replies: 53
Views: 203

Re: Best Way To Study?

I like to go through each homework problem and make sure I understand how to do every one of them! I also watch the modules.
by bellaha3L
Wed Oct 16, 2019 11:14 pm
Forum: *Shrodinger Equation
Topic: Schrondiger's Wave Function Equation
Replies: 4
Views: 45

Re: Schrondiger's Wave Function Equation

Will we have to know Schrodinger's wave function equation for future tests?
by bellaha3L
Wed Oct 16, 2019 11:11 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 1058

Re: Week 2 Homework Problems [ENDORSED]

aphung1G wrote:Does anyone know the energy of microwaves?

Arrange the following types of photons of electromagnetic
radiation in order of increasing energy: g -rays, visible light, ultraviolet radiation, microwaves, x-rays.


microwaves would have the least energy!
by bellaha3L
Wed Oct 16, 2019 11:07 pm
Forum: *Black Body Radiation
Topic: black body
Replies: 2
Views: 30

black body

What should we know about black bodies for upcoming tests?
by bellaha3L
Thu Oct 10, 2019 8:53 pm
Forum: Limiting Reactant Calculations
Topic: percent yield
Replies: 10
Views: 91

percent yield

should we always show the percent yields in the limiting reactant problems, or just when it's specifically asked?
by bellaha3L
Thu Oct 10, 2019 8:52 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 1875

Re: Test 1 [ENDORSED]

We don't need a blue book! Good luck!
by bellaha3L
Thu Oct 10, 2019 8:51 pm
Forum: Properties of Electrons
Topic: work needed
Replies: 2
Views: 32

work needed

should we draw diagrams for all the electron problems? Is it a necessity?
by bellaha3L
Thu Oct 10, 2019 8:50 pm
Forum: Significant Figures
Topic: for test 1
Replies: 3
Views: 60

for test 1

for test 1, will we get points off if we round to the wrong significant figure?
by bellaha3L
Thu Oct 10, 2019 8:49 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: for test 1
Replies: 1
Views: 46

for test 1

should we know the definitions verbatim of accuracy, precision, mole, etc. for the test?
by bellaha3L
Thu Oct 03, 2019 9:37 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: avogadro number
Replies: 7
Views: 61

avogadro number

Can someone explain to me what exactly the avogadro number is and how we use it?
by bellaha3L
Thu Oct 03, 2019 9:33 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 62
Views: 18484

Re: Final Jitters

Anxiety is something I struggle with too! I like to reread and practice problems during the week to make sure I am prepared for the test!
by bellaha3L
Thu Oct 03, 2019 9:08 pm
Forum: SI Units, Unit Conversions
Topic: which unit to use
Replies: 9
Views: 99

which unit to use

If not given a specific unit to convert, should we just keep the units as it is in the problem, or convert it to the SI fundamental base units?
by bellaha3L
Thu Oct 03, 2019 12:53 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: differentiating between different types of masses
Replies: 2
Views: 35

differentiating between different types of masses

What is the difference between atomic mass and molar mass and regular mass?
by bellaha3L
Thu Oct 03, 2019 12:32 pm
Forum: SI Units, Unit Conversions
Topic: knowing how many sig figs to use
Replies: 17
Views: 94

knowing how many sig figs to use

If a problem uses a certain amount of sig figs, should all our work use that amount of sig figs, or should we round to the sig fig amount only for the answer?

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