Search found 52 matches

by Merin Padayatty 3G
Sun Dec 08, 2019 11:02 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: bent v. angular
Replies: 20
Views: 209

Re: bent v. angular

Bent and angular are the same shape.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent Shape
Replies: 29
Views: 363

Re: Bent Shape

A bent shape can have either one lone pair or two lone pairs depending on their electron geometry.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:48 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Cis vs Trans
Replies: 21
Views: 262

Re: Cis vs Trans

Cis molecules are polar whereas trans molecules are nonpolar.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:46 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: -ate
Replies: 11
Views: 141

Re: -ate

You would add an -ate to the end of metal when the overall charge of the coordination complex is negative.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:44 pm
Forum: Naming
Topic: "Ferrate"
Replies: 14
Views: 312

Re: "Ferrate"

When the coordination compund has an overall negative charge, you would use ferrate instead of iron as the metals in a negative coordination complex end in
-ate.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:40 pm
Forum: Naming
Topic: Ferrate and Cuprate? [ENDORSED]
Replies: 5
Views: 83

Re: Ferrate and Cuprate? [ENDORSED]

The the coordination complex has an overall negative charge, you would use ferrate instead of iron and cuprate instead of copper.
by Merin Padayatty 3G
Sun Dec 08, 2019 10:38 pm
Forum: Naming
Topic: Naming
Replies: 7
Views: 89

Re: Naming

When the ligand already has a prefix, including polydentate ligands, you would use those prefixes.
by Merin Padayatty 3G
Sat Nov 30, 2019 4:30 pm
Forum: Resonance Structures
Topic: Formal Charge Question
Replies: 15
Views: 177

Re: Formal Charge Question

The formal charge of a resonance structure should be equal to the atom's overall charge.
by Merin Padayatty 3G
Sat Nov 30, 2019 4:28 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Shortcut for Formal Charge
Replies: 14
Views: 246

Re: Shortcut for Formal Charge

A quick way to calculate formal charge is to count subtract the sum of the number of lone electrons and bonds by the number of valence electrons.
by Merin Padayatty 3G
Sat Nov 30, 2019 4:25 pm
Forum: Dipole Moments
Topic: Dipole Induced- Dipole Induced
Replies: 13
Views: 124

Re: Dipole Induced- Dipole Induced

Induced dipole-induced dipole forces are the weakest intermolecular force and occur between nonpolar molecules.
by Merin Padayatty 3G
Sat Nov 30, 2019 4:23 pm
Forum: Sigma & Pi Bonds
Topic: Sigma & Pi Bonds
Replies: 9
Views: 66

Re: Sigma & Pi Bonds

Sigma bonds are stronger than pi bonds because the atomic orbitals forming sigma bonds overlap to a greater extent than the orbitals forming pi bonds.
by Merin Padayatty 3G
Sat Nov 30, 2019 4:19 pm
Forum: Bond Lengths & Energies
Topic: Strongest Bonds
Replies: 11
Views: 158

Re: Strongest Bonds

The next favorable bond would be ion-dipole.
by Merin Padayatty 3G
Tue Nov 26, 2019 11:42 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 9
Views: 127

Re: Formal Charge

I write the calculations on the side and write the final answer next to each atom.
by Merin Padayatty 3G
Tue Nov 26, 2019 11:35 am
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 10
Views: 108

Re: Bond Length

The exact bond length is derived from experiments, but relative bond lengths can be determined from bond order.
by Merin Padayatty 3G
Tue Nov 26, 2019 11:33 am
Forum: Dipole Moments
Topic: Dipole Moment
Replies: 10
Views: 134

Re: Dipole Moment

The periodic table provides a general trend of electronegativity, and you can determine whether a molecule has a dipole moment and is polar from the shape using the VSEPR model.
by Merin Padayatty 3G
Tue Nov 26, 2019 11:28 am
Forum: Dipole Moments
Topic: Hydrogen Bonding
Replies: 17
Views: 256

Re: Hydrogen Bonding

Yes, an H atom has to bond with an N, O, or F atom to be considered as a hydrogen bond.
by Merin Padayatty 3G
Tue Nov 26, 2019 11:24 am
Forum: Sigma & Pi Bonds
Topic: Molecular Shape
Replies: 11
Views: 82

Re: Molecular Shape

Sigma bonds allow for rotation whereas pi bonds do not. However, single, double, and triple bonds are all considered as only one region of electron density.
by Merin Padayatty 3G
Sun Nov 17, 2019 8:35 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent or Angular
Replies: 13
Views: 150

Re: Bent or Angular

Bent and angular are synonymous, but the textbook uses the term "angular."
by Merin Padayatty 3G
Sun Nov 17, 2019 8:33 am
Forum: Determining Molecular Shape (VSEPR)
Topic: seesaw
Replies: 9
Views: 82

Re: seesaw

When a molecule has 4 bonding pairs and 1 lone pair, the shape is seesaw.
by Merin Padayatty 3G
Sun Nov 17, 2019 8:32 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 6
Views: 72

Re: Lone Pairs

The actual shape of the molecule is dependent on the bonding electron pairs.
by Merin Padayatty 3G
Sun Nov 17, 2019 8:30 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Electronegativity
Replies: 5
Views: 53

Re: Electronegativity

You should know the general periodic table trend for electronegativity because it's relevant when drawing Lewis structures.
by Merin Padayatty 3G
Sun Nov 17, 2019 8:27 am
Forum: Determining Molecular Shape (VSEPR)
Topic: What is VSPER
Replies: 14
Views: 192

Re: What is VSPER

VSEPR stands for "valence shell electron pair repulsion" and we don't need to have the acronym memorized.
by Merin Padayatty 3G
Sun Nov 10, 2019 2:16 pm
Forum: Dipole Moments
Topic: Polar
Replies: 9
Views: 107

Re: Polar

A higher difference in electronegativity results in a polar molecule.
by Merin Padayatty 3G
Sun Nov 10, 2019 2:14 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarisability vs Polarizing Power
Replies: 15
Views: 184

Re: Polarisability vs Polarizing Power

Smaller cations with a larger effective nuclear charge have a higher polarizing power whereas larger anions are have a higher polarizability.
by Merin Padayatty 3G
Sun Nov 10, 2019 2:11 pm
Forum: Bond Lengths & Energies
Topic: Test 2 Topics
Replies: 40
Views: 497

Re: Test 2 Topics

Test 2 covers what we learn after the midterm.
by Merin Padayatty 3G
Sun Nov 10, 2019 2:10 pm
Forum: Electronegativity
Topic: Periodic Trend
Replies: 13
Views: 109

Re: Periodic Trend

Electronegativity increases up the group and across a period.
by Merin Padayatty 3G
Sun Nov 10, 2019 2:08 pm
Forum: Octet Exceptions
Topic: octet exceptions
Replies: 11
Views: 145

Re: octet exceptions

All elements in period 3 and after can have an expanded octet.
by Merin Padayatty 3G
Sat Nov 02, 2019 10:43 am
Forum: Lewis Structures
Topic: Valence Electrons from Periodic Table
Replies: 10
Views: 113

Re: Valence Electrons from Periodic Table

The number of valence electrons is determined by the group number.
by Merin Padayatty 3G
Sat Nov 02, 2019 10:37 am
Forum: Octet Exceptions
Topic: More than 8 valence e-
Replies: 8
Views: 79

Re: More than 8 valence e-

Why can d orbitals carry extra electrons?
by Merin Padayatty 3G
Sat Nov 02, 2019 10:35 am
Forum: Bond Lengths & Energies
Topic: Single bond vs double bond
Replies: 14
Views: 156

Re: Single bond vs double bond

The Angstrom is the unit that describes bond length. A double bond has a shorter bond length than a single bond.
by Merin Padayatty 3G
Sat Nov 02, 2019 10:29 am
Forum: Electronegativity
Topic: Electronegativity on Test
Replies: 7
Views: 63

Re: Electronegativity on Test

How should we take account of electronegativity when drawing Lewis structures?
by Merin Padayatty 3G
Sat Nov 02, 2019 10:25 am
Forum: General Science Questions
Topic: Can We Take The Final In Pencil?
Replies: 14
Views: 587

Re: Can We Take The Final In Pencil?

All tests and midterms have to written in pen.
by Merin Padayatty 3G
Sat Oct 26, 2019 11:13 pm
Forum: Ionic & Covalent Bonds
Topic: Cation
Replies: 23
Views: 283

Re: Cation

Another difference between cations and anions is that cations are usually smaller than their parent atom and anions are usually larger than their parent atom.
by Merin Padayatty 3G
Sat Oct 26, 2019 11:10 pm
Forum: Trends in The Periodic Table
Topic: blocks
Replies: 13
Views: 108

Re: blocks

Yes, knowing the blocks is very beneficial when writing out electron configurations.
by Merin Padayatty 3G
Sat Oct 26, 2019 11:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 11
Views: 121

Re: Midterm

Will the midterm cover the chemical bond section?
by Merin Padayatty 3G
Sat Oct 26, 2019 11:05 pm
Forum: Administrative Questions and Class Announcements
Topic: Extra help
Replies: 8
Views: 134

Re: Extra help

I like watching Khan Academy and Organic Chemistry both to reinforce and clarify certain topics!
by Merin Padayatty 3G
Sat Oct 26, 2019 11:03 pm
Forum: Administrative Questions and Class Announcements
Topic: Online Modules
Replies: 7
Views: 82

Re: Online Modules

As of right now, the modules cover Week 1 and 2 material.
by Merin Padayatty 3G
Sun Oct 20, 2019 4:18 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 58
Views: 969

Re: Advice for studying

After going to lecture, I like to immediately read the material covered in the textbook to solidify the concepts. I also try to do the corresponding homework problems right away and I'll go to TA hours if I'm confused about anything.
by Merin Padayatty 3G
Sat Oct 19, 2019 9:45 pm
Forum: Properties of Electrons
Topic: Angstrom Conversion
Replies: 12
Views: 134

Re: Angstrom Conversion

An angstrom is equivalent to 1*10^(-10) meters and is usually used to measure bond length.
by Merin Padayatty 3G
Sat Oct 19, 2019 9:42 pm
Forum: Einstein Equation
Topic: E=hv
Replies: 43
Views: 3122

Re: E=hv

With this particle equation, E represents the energy of the photon.
by Merin Padayatty 3G
Sat Oct 19, 2019 9:39 pm
Forum: Properties of Light
Topic: Baler v. Lyman Series
Replies: 10
Views: 91

Re: Baler v. Lyman Series

The Balmer series applies to the visible light region and the Lyman series applies to the UV region of the spectrum.
by Merin Padayatty 3G
Sat Oct 19, 2019 9:35 pm
Forum: General Science Questions
Topic: Tests
Replies: 9
Views: 106

Re: Tests

Although Test 1 contained all the unit conversions needed, I believe it will be safer and easier to memorize the main conversions especially for the midterm.
by Merin Padayatty 3G
Sat Oct 12, 2019 7:56 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 3506

Re: Test 1 [ENDORSED]

We'll most likely get our tests back during our next discussion.
by Merin Padayatty 3G
Sat Oct 12, 2019 7:48 pm
Forum: Properties of Light
Topic: Frequency vs. Wavelength
Replies: 15
Views: 149

Re: Frequency vs. Wavelength

Frequency and wavelength have an inverse relationship as when the frequency increases, the wavelength decreases and vice versa.
by Merin Padayatty 3G
Sat Oct 12, 2019 7:43 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 2010

Re: Week 2 Homework Problems [ENDORSED]

I think we're only supposed to turn in problems from the quantum section this week.
by Merin Padayatty 3G
Sat Oct 12, 2019 7:33 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 41
Views: 1137

Re: Speed of Light

The speed of light is a constant as it doesn't change.
by Merin Padayatty 3G
Sat Oct 12, 2019 7:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1152498

Re: Post All Chemistry Jokes Here

What should you do if no one laughs at your chemistry jokes?
Keep telling them until you get a reaction.
by Merin Padayatty 3G
Sun Oct 06, 2019 10:20 pm
Forum: Ideal Gases
Topic: Reading the textbook [ENDORSED]
Replies: 134
Views: 85083

Re: Reading the textbook [ENDORSED]

I personally find reading the textbook very beneficial just so I can go in depth on the topics covered. I usually have to read the text more than once to really comprehend the material so I break the text into small sections.
by Merin Padayatty 3G
Sun Oct 06, 2019 10:12 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Reactions
Replies: 25
Views: 454

Re: Balancing Reactions

Chemical reactions have to be balanced in order to satisfy the law of conservation of matter which states that matter is neither created nor destroyed in a closed system. Therefore, the amount of element in the reactant and poduct sides have to be equal.
by Merin Padayatty 3G
Sun Oct 06, 2019 10:02 pm
Forum: Empirical & Molecular Formulas
Topic: What decimal place to round to when taking masses from the Periodic Table?
Replies: 19
Views: 285

Re: What decimal place to round to when taking masses from the Periodic Table?

I would say to use the entire number given on the periodic table and then to round your final answer based on the rules of sig figs.
by Merin Padayatty 3G
Sun Oct 06, 2019 9:58 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 150
Views: 5578

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

It was super inspiring and motivating to hear your experience as a medical student! As a first year premed, I'm wondering how you were able to balance your social and academic life?
by Merin Padayatty 3G
Sun Oct 06, 2019 9:51 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 118
Views: 23670

Re: Final Jitters

One of the most helpful things I've learned over the past couple years on how to ease jitters before exams is to not discuss the content or try to cram in last minute material right before taking the test. Instead, I like to take deep breathes in order to calm myself down and get myself in the right...

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