Search found 40 matches

by Aryana Nazem 1A
Thu Jun 14, 2018 11:18 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Predicting polarizability and polarizing power
Replies: 5
Views: 385

Re: Predicting polarizability and polarizing power

Polarizability increases w atomic radius aka down a group bc their electron clouds can easily be distorted where as small highly charged cations have high polarizing power (decreases across a period)
by Aryana Nazem 1A
Tue Jun 12, 2018 8:47 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Oxidation State
Replies: 3
Views: 221

Re: Oxidation State

Also to add does anyone know if we are responsible for naming complex ions before determining the oxidation number? Do we need to name the compounds like the chapter 17 hw questions say or will they be given to us??
by Aryana Nazem 1A
Tue Jun 12, 2018 6:31 pm
Forum: Bond Lengths & Energies
Topic: Bond Angles
Replies: 3
Views: 236

Bond Angles

When you have a molecule that is a tetrahedral in respect to the electron geometry but it has 1 lone pair or 2 would we just say the angles are less than 109.5 or would we have to be more specific?
by Aryana Nazem 1A
Sat Jun 09, 2018 7:12 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Q: What is the show cesium and iodine love watching together?
A: CSI
by Aryana Nazem 1A
Sat Jun 09, 2018 7:12 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Did you know that oxygen went for a second date with potassium?
How did it go?
It went OK2!
by Aryana Nazem 1A
Sat Jun 09, 2018 7:10 pm
Forum: Bond Lengths & Energies
Topic: Bond length
Replies: 5
Views: 278

Re: Bond length

You can look at the number of electrons that are present in each molecule. If there are more lone pairs, they will repel each other and cause a longer bond to be formed. So for F when more electrons are added, it makes the bond longer? Yes in this case because you are adding more electrons and ther...
by Aryana Nazem 1A
Sun Jun 03, 2018 4:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Naming Structures
Replies: 8
Views: 253

Re: Naming Structures

I do not think we will need to know how to name molecular structures for the final, however I could be wrong.
by Aryana Nazem 1A
Sun Jun 03, 2018 4:21 pm
Forum: Hybridization
Topic: Differences Between Pi and Sigma bonds
Replies: 7
Views: 223

Re: Differences Between Pi and Sigma bonds

all bonds have one sigma bond, when you have two bonds there is one sigma and one pi bond, and when you have a triple bond you have your sigma and two pi bonds. I think this is an important rule to remember and to be able to distinguish
by Aryana Nazem 1A
Sun Jun 03, 2018 4:18 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Transition Metal Valence Electrons
Replies: 3
Views: 175

Re: Transition Metal Valence Electrons

I believe you look at the 2 electrons in the 4s2 and the two electrons in the 3d2. This would be a total of 4 electrons ie. your four valenece electrons.
by Aryana Nazem 1A
Mon May 28, 2018 3:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSPER MODEL
Replies: 3
Views: 116

Re: VSPER MODEL

I was wondering if anyone knew how to treat lone pairs when trying to name the molecular geometry?
by Aryana Nazem 1A
Mon May 28, 2018 12:25 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Q: Why do chemistry students do well when working with ammonia?
A: Because it's pretty basic stuff.
by Aryana Nazem 1A
Mon May 28, 2018 12:25 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

A photon checks into a hotel and is asked if he needs any help with his luggage.
He says, "No, I'm traveling light"
by Aryana Nazem 1A
Mon May 28, 2018 12:24 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

What do chemists call a benzene ring with iron atoms replacing the carbon atoms?

wait for it..

A ferrous wheel.
by Aryana Nazem 1A
Mon May 21, 2018 9:48 pm
Forum: Lewis Structures
Topic: 3.55
Replies: 6
Views: 145

Re: 3.55

Nabeeha Khan 1D wrote:BrO IS a radical because it has an odd number of valence electrons, but I think you are confusing #55 and #56 as part D for #55 is not BrO and that is instead part D for #56. Hope that helps! :)

thanks so muchhhh nabz:)
by Aryana Nazem 1A
Sun May 20, 2018 3:48 pm
Forum: Lewis Structures
Topic: 3.55
Replies: 6
Views: 145

Re: 3.55

Why is d.) not a radical since Br has 7 valence e- and O has 6 valence e- for an odd total of 13e-?
by Aryana Nazem 1A
Sat May 19, 2018 11:25 pm
Forum: Lewis Structures
Topic: Test #3
Replies: 11
Views: 377

Re: Test #3

Okay thank you so much!
by Aryana Nazem 1A
Fri May 18, 2018 10:17 pm
Forum: Lewis Structures
Topic: Test #3
Replies: 11
Views: 377

Re: Test #3

Specifically what hw questions we should know how to do for this test?
by Aryana Nazem 1A
Fri May 18, 2018 10:16 pm
Forum: Lewis Structures
Topic: Test #3
Replies: 11
Views: 377

Re: Test #3

Does anyone know if the test for this quarter covers all of chapter 3?
by Aryana Nazem 1A
Sun May 13, 2018 10:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Q: How did the hipster chemist burn his hand?
A: He picked up his beaker before it was cool.
by Aryana Nazem 1A
Sun May 13, 2018 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Q: Why didn't the chemist enjoy doing chromatography?
A: He got separation anxiety.
by Aryana Nazem 1A
Sun May 13, 2018 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

Q: What's a pirate's favorite element? (your victim may assume "arrrrgon".)
A: Gold.
by Aryana Nazem 1A
Sun May 06, 2018 8:31 pm
Forum: Quantum Numbers and The H-Atom
Topic: Nodal Planes- what are they exactly? [ENDORSED]
Replies: 6
Views: 4856

Re: Nodal Planes- what are they exactly? [ENDORSED]

Okay, but for the midterm will we just have to know conceptually what this equation does or will be have to actually use it?
by Aryana Nazem 1A
Sun May 06, 2018 8:30 pm
Forum: Molarity, Solutions, Dilutions
Topic: question on fundamentals G
Replies: 5
Views: 372

Re: question on fundamentals G

So basically if I understand this right, we would only be expected to know that after many dilutions you would have close to less than one molecule left? If that is right, would we have to show some sort of mathematical work for this?
by Aryana Nazem 1A
Sun May 06, 2018 3:09 pm
Forum: Molarity, Solutions, Dilutions
Topic: question on fundamentals G
Replies: 5
Views: 372

Re: question on fundamentals G

Hey I was wondering if anyone could explain G.25 for me? I don't understand how to go about this, thanks in advance!! G.25 Practitioners of the branch of alternative medicine known as homeopathy claim that very dilute solutions of substances can have an effect. Is the claim plausible? To explore thi...
by Aryana Nazem 1A
Sun May 06, 2018 3:07 pm
Forum: Quantum Numbers and The H-Atom
Topic: Nodal Planes- what are they exactly? [ENDORSED]
Replies: 6
Views: 4856

Re: Nodal Planes- what are they exactly? [ENDORSED]

But why can't you find an electron in these planes?
by Aryana Nazem 1A
Wed May 02, 2018 8:34 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation [ENDORSED]
Replies: 8
Views: 413

Re: Schrodinger Equation [ENDORSED]

Does anyone know if this equation will be fair game for our midterm? Also will we just have to know what it means conceptually or will we have to actually need to use it?
by Aryana Nazem 1A
Sun Apr 29, 2018 2:36 pm
Forum: DeBroglie Equation
Topic: homework problems [ENDORSED]
Replies: 5
Views: 233

Re: homework problems [ENDORSED]

I assume that since test 2 is over which covered everything up until 1.5 we can do any hw problem after that.
by Aryana Nazem 1A
Sun Apr 29, 2018 2:29 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electrons in an Orbital [ENDORSED]
Replies: 8
Views: 220

Re: Electrons in an Orbital [ENDORSED]

Also can someone explain how the 4th quantum number ties into this topic?
by Aryana Nazem 1A
Sun Apr 29, 2018 2:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electrons in an Orbital [ENDORSED]
Replies: 8
Views: 220

Re: Electrons in an Orbital [ENDORSED]

does anyone know if we will be required to draw what the different atomic orbitals looks like?
by Aryana Nazem 1A
Sun Apr 22, 2018 9:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

I asked the guy sitting next to me if he had any Sodium Hypobromite…
He said NaBrO
by Aryana Nazem 1A
Sun Apr 22, 2018 9:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7560
Views: 1010718

Re: Post All Chemistry Jokes Here

A neutron walks into a bar. He asks the bartender, "How much for a beer?" The bartender offers him a warm smile and says, "For you, no charge."
by Aryana Nazem 1A
Sun Apr 22, 2018 9:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 3
Views: 177

Re: Test 2

Also can anyone explain the Stefan -Boltzmann Law??
by Aryana Nazem 1A
Sun Apr 22, 2018 9:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 3
Views: 177

test 2

what is the difference between absorption spectrum vs. emission spectrum?
by Aryana Nazem 1A
Mon Apr 16, 2018 8:41 pm
Forum: Photoelectric Effect
Topic: When to use Planck's Constant [ENDORSED]
Replies: 5
Views: 204

Re: When to use Planck's Constant [ENDORSED]

For question 9 chapter one, when we are given a frequency of 300 MHz and we want to find the energy per photon I presume we just plug it into the E=hv formula but when i do this I get 2 x 10 ^-37 which is not the write answer for E.
by Aryana Nazem 1A
Sun Apr 15, 2018 11:34 pm
Forum: Einstein Equation
Topic: einstein equation and other equations [ENDORSED]
Replies: 3
Views: 172

einstein equation and other equations [ENDORSED]

what kinds of questions will we be asked to work out with this equation?
by Aryana Nazem 1A
Sun Apr 15, 2018 11:21 pm
Forum: Properties of Electrons
Topic: Geiger -Marsden experiment [ENDORSED]
Replies: 5
Views: 202

Re: Geiger -Marsden experiment [ENDORSED]

will we have to know all the early scientists who propsed differenttheories for the composition of an atom??
by Aryana Nazem 1A
Sun Apr 15, 2018 11:18 pm
Forum: Properties of Light
Topic: Wavelength [ENDORSED]
Replies: 9
Views: 326

Re: Wavelength [ENDORSED]

do we have to memorize the different wavelength frequencies corresponding to its color for future tests?
by Aryana Nazem 1A
Sun Apr 15, 2018 11:00 pm
Forum: Properties of Light
Topic: Wavelength [ENDORSED]
Replies: 9
Views: 326

Re: Wavelength [ENDORSED]

do we have to memorize the different wavelength frequencies corresponding to its color for future tests?
by Aryana Nazem 1A
Thu Apr 12, 2018 12:21 am
Forum: SI Units, Unit Conversions
Topic: Chemistry Review Section E
Replies: 4
Views: 183

Re: Chemistry Review Section E

No, if i am understanding your question..(not sure if i am), because you are given the units of the ions in moles to begin with .Don't quote me though.
by Aryana Nazem 1A
Thu Apr 12, 2018 12:09 am
Forum: SI Units, Unit Conversions
Topic: Chemistry Review Section E
Replies: 2
Views: 144

Re: Chemistry Review Section E

Hey okay so what i think is that when they ask for formula units it is the equivalent to atoms/molecules.

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