Search found 45 matches

by emwoodc
Fri Nov 29, 2019 9:28 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Explain VSEPR conceptually
Replies: 12
Views: 124

Re: Explain VSEPR conceptually

VESPR model is what we name all the models that are in 3D, gives us a more in-depth look at how the molecule is arranged in real life.
by emwoodc
Fri Nov 29, 2019 9:27 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent Shape
Replies: 29
Views: 363

Re: Bent Shape

a bent shape can have either one or two lone pairs
by emwoodc
Fri Nov 29, 2019 9:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-Shape
Replies: 5
Views: 59

Re: T-Shape

in the VSEPR model, you can see that it is not the same.
by emwoodc
Fri Nov 29, 2019 9:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular shape of carbon Dioxide
Replies: 10
Views: 50

Re: Molecular shape of carbon Dioxide

it would be linear
by emwoodc
Fri Nov 29, 2019 9:25 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw Shape
Replies: 12
Views: 103

Re: Seesaw Shape

<90 and <120
by emwoodc
Fri Nov 29, 2019 9:23 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 6
Views: 75

Re: Test 2

you will probably get your score in discussion
by emwoodc
Fri Nov 29, 2019 9:22 pm
Forum: Hybridization
Topic: Overlapping of Orbitals
Replies: 2
Views: 33

Re: Overlapping of Orbitals

overlapping of bonds equal double and triple bonds.
by emwoodc
Fri Nov 29, 2019 9:21 pm
Forum: Hybridization
Topic: Bond angles
Replies: 2
Views: 39

Re: Bond angles

the reason why these bond angels are less comes from the lone pairs that are pressing the angles down. the only way it would be greater is possibly from removing those lone pairs maybe?
by emwoodc
Fri Nov 29, 2019 9:18 pm
Forum: Hybridization
Topic: Hybridization for elements like S, Xe, Br, etc.
Replies: 4
Views: 35

Re: Hybridization for elements like S, Xe, Br, etc.

hybridization should be the same for every element.
by emwoodc
Fri Nov 29, 2019 9:17 pm
Forum: Hybridization
Topic: double bonds
Replies: 7
Views: 53

Re: double bonds

a double bond would be a sigma and pi bond
by emwoodc
Fri Nov 29, 2019 9:16 pm
Forum: Hybridization
Topic: sigma or pi?
Replies: 20
Views: 141

Re: sigma or pi?

you count the number of bonds there are. for example, a single bond is a sigma bond, a double bond is sigma and pi, and a triple bond is sigma and two pi.
by emwoodc
Fri Nov 29, 2019 9:15 pm
Forum: Hybridization
Topic: Reason for 1 sigma and multiple pi bonds
Replies: 3
Views: 30

Re: Reason for 1 sigma and multiple pi bonds

when you have double and triple bonds, the orbitals are overlapping side by side and this side by side overlap is called pi bonds. Everything overlapping is called pi bonds so the ones that are no overlapping, which only happens once is called sigma bonds.
by emwoodc
Fri Nov 29, 2019 9:14 pm
Forum: Hybridization
Topic: Sigma and Pi bonds
Replies: 7
Views: 72

Re: Sigma and Pi bonds

so the single bonds are sigma bonds, the double bonds are sigma bonds and pi bonds, and triple bonds are one sigma bonds and two pi bonds
by emwoodc
Fri Nov 15, 2019 9:10 am
Forum: Lewis Structures
Topic: Xenon
Replies: 4
Views: 55

Re: Xenon

Xenon has an empty d orbital which allows it to have extended electrons.
by emwoodc
Fri Nov 15, 2019 9:10 am
Forum: Lewis Structures
Topic: Oxygen
Replies: 9
Views: 139

Re: Oxygen

where did you learn that oxygen can only have double bonds
by emwoodc
Fri Nov 15, 2019 9:09 am
Forum: Lewis Structures
Topic: Polar and Non polar covalent bonds in lewis structures
Replies: 5
Views: 30

Re: Polar and Non polar covalent bonds in lewis structures

defining them is not very necessary but knowing what it means should be helpful.
by emwoodc
Fri Nov 15, 2019 9:08 am
Forum: Lewis Structures
Topic: Ground-State Electron Configuration
Replies: 5
Views: 46

Re: Ground-State Electron Configuration

they're the same
by emwoodc
Fri Nov 15, 2019 9:08 am
Forum: Lewis Structures
Topic: Biradical
Replies: 2
Views: 29

Re: Biradical

a biradical is an even compound with two radical centers; however, we didn't really talk about it in class so we shouldn't have to know much about it.
by emwoodc
Fri Nov 15, 2019 9:06 am
Forum: Lewis Structures
Topic: Expanded Octet
Replies: 10
Views: 80

Re: Expanded Octet

elements beyond the 3rd period have extra room to take the extra electrons in! which allows it to be expanded
by emwoodc
Fri Nov 15, 2019 9:04 am
Forum: Lewis Structures
Topic: Lewis Dot Structures
Replies: 7
Views: 74

Re: Lewis Dot Structures

at the point where we are at the lecture, no
by emwoodc
Fri Nov 15, 2019 9:03 am
Forum: Lewis Structures
Topic: Bonds
Replies: 4
Views: 31

Re: Bonds

the strength and length changes when it is a double or triple bond so when you use it you should think about it
by emwoodc
Fri Nov 15, 2019 9:02 am
Forum: Lewis Structures
Topic: Center of a Lewis Structure
Replies: 7
Views: 66

Re: Center of a Lewis Structure

yes, lavelle specified in class that the atom with the lowest ionization energy should be at the center
by emwoodc
Fri Nov 15, 2019 9:02 am
Forum: Lewis Structures
Topic: Lewis Structure
Replies: 6
Views: 47

Re: Lewis Structure

calculate formal charge
by emwoodc
Fri Nov 15, 2019 8:59 am
Forum: General Science Questions
Topic: Test 2
Replies: 20
Views: 190

Re: Test 2

everything after the midterm is covered!
by emwoodc
Mon Oct 21, 2019 4:39 pm
Forum: Properties of Light
Topic: Homework due Next Week
Replies: 9
Views: 106

Re: Homework due Next Week

as long as the topic is still on the topic discussed we should be turning in homework according to it,
by emwoodc
Mon Oct 21, 2019 4:38 pm
Forum: Properties of Light
Topic: Speed of light
Replies: 13
Views: 104

Re: Speed of light

EMR is the speed of light so we typically use it
by emwoodc
Mon Oct 21, 2019 4:36 pm
Forum: SI Units, Unit Conversions
Topic: Unit conversion
Replies: 15
Views: 318

Re: Unit conversion

you use conversion factors!
by emwoodc
Mon Oct 21, 2019 4:35 pm
Forum: SI Units, Unit Conversions
Topic: Calculate using kg or g?
Replies: 13
Views: 280

Re: Calculate using kg or g?

you can't go wrong with always answer using grams and converting early on wouldn't hurt.
by emwoodc
Mon Oct 21, 2019 4:35 pm
Forum: SI Units, Unit Conversions
Topic: Additional Practice
Replies: 2
Views: 78

Re: Additional Practice

for review I don't know if you took AP Chem or not but my AP chem review books gave me a lot of review questions.
by emwoodc
Tue Oct 15, 2019 7:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 1 Solutions
Replies: 4
Views: 185

Re: Test 1 Solutions

I heard most of the test questions are similar to the ones in the homework so if you find the topic and compare solutions it'll be easy to figure out how to solve the problem! if not, going to office hours won't hurt.
by emwoodc
Tue Oct 15, 2019 7:24 pm
Forum: Administrative Questions and Class Announcements
Topic: Discussion about Test questions
Replies: 5
Views: 224

Re: Discussion about Test questions

Everyone is getting their tests back in their discussions this week so it should be okay to talk about them freely
by emwoodc
Tue Oct 15, 2019 7:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Deadline to post
Replies: 7
Views: 365

Re: Deadline to post

it's 5 posts every week and the week ends with sunday night.
by emwoodc
Tue Oct 15, 2019 7:21 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 48
Views: 40877

Re: How to find my posts

click on your own username and you should be able to find all your responses and new topics
by emwoodc
Tue Oct 15, 2019 7:21 pm
Forum: Properties of Light
Topic: Quantum Topic Homework
Replies: 1
Views: 34

Quantum Topic Homework

If we are not done with Quantum Topic 1 by the end of week three, do we just keep turning in questions from that section? just new problems?
by emwoodc
Tue Oct 15, 2019 7:19 pm
Forum: Properties of Light
Topic: Next test
Replies: 23
Views: 301

Re: Next test

TA said we will be getting the equation sheet we got for every test.
by emwoodc
Tue Oct 15, 2019 7:18 pm
Forum: Properties of Light
Topic: 1A.15
Replies: 4
Views: 101

1A.15

Im not entirely sure what the R means in the equation. It throws me off
by emwoodc
Tue Oct 15, 2019 7:15 pm
Forum: Properties of Light
Topic: Variables and what they mean
Replies: 9
Views: 87

Re: Variables and what they mean

lamda is the upside down v with a little edge at the top and it symbolizes wavelength and the v is frequency
by emwoodc
Tue Oct 15, 2019 7:13 pm
Forum: Properties of Light
Topic: Homework
Replies: 11
Views: 70

Re: Homework

i personally did the first 5 questions that were on the homework list and I got full credit
by emwoodc
Sun Oct 06, 2019 11:11 pm
Forum: Significant Figures
Topic: Clarification with sig figs
Replies: 6
Views: 83

Re: Clarification with sig figs

if you round throughout the problem there's a chance that your measurements will be off and the answer will be off
by emwoodc
Sun Oct 06, 2019 11:09 pm
Forum: Significant Figures
Topic: Sig Figs When Adding and Subtracting
Replies: 3
Views: 55

Re: Sig Figs When Adding and Subtracting

when adding or subtracting you use the number with the least sig figs and match the answer to it
by emwoodc
Sun Oct 06, 2019 11:09 pm
Forum: Significant Figures
Topic: Sig Figs in Mulitstep Problems
Replies: 10
Views: 103

Re: Sig Figs in Mulitstep Problems

Yes, if you round the sig figs too early in the problem, it could produce an answer that's one or two numbers off
by emwoodc
Sun Oct 06, 2019 11:07 pm
Forum: Significant Figures
Topic: Rules for Significant Figures
Replies: 4
Views: 92

Re: Rules for Significant Figures

Most of them are mentioned but the one that gets me the most is the rule where if there is a decimal point the zeros after it always counts
by emwoodc
Sun Oct 06, 2019 11:05 pm
Forum: Significant Figures
Topic: Sig Figs in % Yield
Replies: 10
Views: 241

Re: Sig Figs in % Yield

according to the rounding rule, it should be 64%

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