Search found 55 matches

by Donavin Collins 3B
Sun Dec 08, 2019 10:53 am
Forum: Conjugate Acids & Bases
Topic: Bronsted vs Conjugate
Replies: 3
Views: 14

Bronsted vs Conjugate

What's the difference between a bronsted acid and a conjugate acid?
by Donavin Collins 3B
Sun Dec 08, 2019 10:50 am
Forum: Hybridization
Topic: 2sp2 and sp2
Replies: 6
Views: 20

2sp2 and sp2

Does anyone know if we would be marked down for writing sp2 rather than 2sp2 and vice versa?
by Donavin Collins 3B
Sun Dec 08, 2019 10:09 am
Forum: Biological Examples
Topic: Cis vs Trans
Replies: 3
Views: 13

Cis vs Trans

What's the difference between cis and trans in chemistry? I've seen it around (like cisplatin and transplatin) but haven't really covered it yet.
by Donavin Collins 3B
Sun Dec 08, 2019 10:07 am
Forum: General Science Questions
Topic: Last minute tips
Replies: 2
Views: 25

Last minute tips

Does anyone have any last minute tips? It can be anything, like specific stuff that we should know for the final. Thanks!!
by Donavin Collins 3B
Sat Dec 07, 2019 6:49 pm
Forum: Naming
Topic: (ox) and (en)
Replies: 2
Views: 9

Re: (os) and (en)

Thank you!! And sorry lol, yeah I meant (ox).
by Donavin Collins 3B
Sat Dec 07, 2019 6:28 pm
Forum: Naming
Topic: (ox) and (en)
Replies: 2
Views: 9

(ox) and (en)

Can someone please explain to me what (en) and (os) mean in coordination compounds?
by Donavin Collins 3B
Sat Dec 07, 2019 5:26 pm
Forum: Naming
Topic: Wrong order
Replies: 4
Views: 13

Wrong order

Does anyone know if we would be marked down for writing out the compound or the name in the wrong order? Is there a specific order that they're supposed to be in?
by Donavin Collins 3B
Wed Dec 04, 2019 4:47 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Strong acids and bases
Replies: 2
Views: 12

Strong acids and bases

Is there an equation or method for knowing if an acid or base is strong? Or is there just a set list of strong acids and bases? If so, does anyone know where i can find that list? :)
by Donavin Collins 3B
Wed Dec 04, 2019 4:19 pm
Forum: Administrative Questions and Class Announcements
Topic: Covel Workshop and Step-Up Sessions [ENDORSED]
Replies: 1
Views: 33

Covel Workshop and Step-Up Sessions [ENDORSED]

I have a quick question about two sessions, a workshop and step-up, which are set to be on Sunday night in Covel. Are they meant to be on Saturday night since we would have already took our final by that time? Or is it just extra review for those who are taking Chem 14B next quarter?
by Donavin Collins 3B
Mon Dec 02, 2019 10:31 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 9 and 10 Homework
Replies: 2
Views: 32

Week 9 and 10 Homework

Can someone please clarify which outlines we're allowed to solve problems from for weeks 9 and 10?
by Donavin Collins 3B
Sun Dec 01, 2019 7:12 pm
Forum: Hybridization
Topic: Writing the hydrization
Replies: 10
Views: 56

Re: Writing the hydrization

Hello, I have a question about the difference between 2sp3 and sp3. How do you know if the "2" in front of the sp3 is supposed to be there? What's the difference between the two?
by Donavin Collins 3B
Sun Dec 01, 2019 7:09 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2.57
Replies: 4
Views: 18

Re: 2.57

Yes, the molecule should be linear.
by Donavin Collins 3B
Sun Dec 01, 2019 7:06 pm
Forum: Dipole Moments
Topic: Hydrogen Bonding
Replies: 17
Views: 140

Re: Hydrogen Bonding

Yes, hydrogen bonding only occurs with the nitrogen, oxygen, and fluorine elements.
by Donavin Collins 3B
Sun Dec 01, 2019 7:03 pm
Forum: Lewis Structures
Topic: Bent or Angular?
Replies: 15
Views: 61

Re: Bent or Angular?

I would use bent since Lavelle uses that term more often.
by Donavin Collins 3B
Sun Dec 01, 2019 6:49 pm
Forum: Sigma & Pi Bonds
Topic: Drawing Sigma and Pi bonds
Replies: 7
Views: 35

Re: Drawing Sigma and Pi bonds

For Test 2, I received full points for simply writing the sigma and pi signs above or below the bond line. Just remember to put a sigma bond sign around every bond line since every bond contains a sigma bond.
by Donavin Collins 3B
Sun Nov 24, 2019 5:02 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 12
Views: 45

Electronegativity

How does electronegativity affect a bond?
by Donavin Collins 3B
Sun Nov 24, 2019 4:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent Shape
Replies: 27
Views: 71

Re: Bent Shape

A bent shape can have up to 2 lone pairs.
by Donavin Collins 3B
Sun Nov 24, 2019 4:46 pm
Forum: Electronegativity
Topic: Increasing/Decreasing Electronegativity
Replies: 9
Views: 31

Re: Increasing/Decreasing Electronegativity

On the periodic table, as you go from left to right the electronegativity increases. And as you go from top to bottom, the electronegativity decreases.
by Donavin Collins 3B
Sun Nov 24, 2019 4:43 pm
Forum: Sigma & Pi Bonds
Topic: How to Find Sigma Bonds and Pi Bonds
Replies: 14
Views: 66

Re: How to Find Sigma Bonds and Pi Bonds

When there is a single bond, there is one sigma bond. When there is a double bond, there is one sigma bond and one pi bond. When there is a triple bond, there is one sigma bond and two pi bonds.
by Donavin Collins 3B
Sun Nov 24, 2019 4:41 pm
Forum: Resonance Structures
Topic: Resonance structures
Replies: 15
Views: 63

Re: Resonance structures

A resonance structure is simply when a molecule can be drawn as a Lewis structure in more than one way.
by Donavin Collins 3B
Sat Nov 16, 2019 11:30 am
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Test 2
Replies: 5
Views: 27

Test 2

I'm a bit confused on what exactly is going to be on test 2. Can someone explain to me what's going to be on it? Thank you.
by Donavin Collins 3B
Sat Nov 16, 2019 11:25 am
Forum: Ionic & Covalent Bonds
Topic: Hydrogen Bond Strength
Replies: 8
Views: 49

Re: Hydrogen Bond Strength

Hydrogen bonds are weaker than ionic and covalent bonds.
by Donavin Collins 3B
Sat Nov 16, 2019 11:18 am
Forum: Bond Lengths & Energies
Topic: Shorter bond lengths
Replies: 12
Views: 53

Re: Shorter bond lengths

When there is a double bond, the attraction between the two atoms is stronger which pulls them closer together. Triple bonds pull the atoms together even closer because the attraction is stronger than a double bond.
by Donavin Collins 3B
Sat Nov 16, 2019 11:13 am
Forum: Lewis Structures
Topic: Ground-State Electron Configuration
Replies: 5
Views: 24

Re: Ground-State Electron Configuration

They're both interchangeable.
by Donavin Collins 3B
Sat Nov 16, 2019 11:11 am
Forum: Ionic & Covalent Bonds
Topic: Bond Strength
Replies: 12
Views: 49

Re: Bond Strength

If the ionic bond is in water, then the covalent bond is stronger. If it's out of water, then the ionic bond is stronger.
by Donavin Collins 3B
Sun Nov 10, 2019 10:05 pm
Forum: Lewis Structures
Topic: Does the shape that I draw the Lewis structure matter?
Replies: 14
Views: 61

Re: Does the shape that I draw the Lewis structure matter?

As long as the electrons are correctly represented, the shape shouldn't matter for now.
by Donavin Collins 3B
Sun Nov 10, 2019 10:01 pm
Forum: Ionic & Covalent Bonds
Topic: Electronegativity in between 1.5 and 2
Replies: 2
Views: 12

Re: Electronegativity in between 1.5 and 2

If it's between 1.5 and 2, there isn't a way to make a solid conclusion.
by Donavin Collins 3B
Sun Nov 10, 2019 9:55 pm
Forum: Electronegativity
Topic: Periodic Trend
Replies: 13
Views: 64

Re: Periodic Trend

The electronegativity increases as it goes up the groups and across the periods.
by Donavin Collins 3B
Sun Nov 10, 2019 9:51 pm
Forum: Ionic & Covalent Bonds
Topic: Solid v. Liquid v. Gas
Replies: 8
Views: 38

Re: Solid v. Liquid v. Gas

From my knowledge, I believe that the state of the element is info that is given.
by Donavin Collins 3B
Sun Nov 10, 2019 9:50 pm
Forum: SI Units, Unit Conversions
Topic: Homework from Outline 3 due?
Replies: 5
Views: 31

Re: Homework from Outline 3 due?

The homework due this week should be from outline 3. We haven't completely finished the section yet.
by Donavin Collins 3B
Sun Nov 03, 2019 6:31 pm
Forum: Resonance Structures
Topic: Resonance structures
Replies: 6
Views: 27

Resonance structures

What is a resonance structure?
by Donavin Collins 3B
Sun Nov 03, 2019 6:31 pm
Forum: Lewis Structures
Topic: Drawing Lewis Structures
Replies: 5
Views: 30

Drawing Lewis Structures

How do you draw a Lewis structure?
by Donavin Collins 3B
Sun Nov 03, 2019 6:29 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs Pi Bonds
Replies: 2
Views: 19

Sigma vs Pi Bonds

What's the difference between a sigma and pi bond?
by Donavin Collins 3B
Sun Nov 03, 2019 6:29 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent
Replies: 14
Views: 98

Ionic vs Covalent

How can you tell if a bond is ionic or covalent?
by Donavin Collins 3B
Sun Nov 03, 2019 6:27 pm
Forum: Bond Lengths & Energies
Topic: Does bond length have any effects?
Replies: 5
Views: 16

Does bond length have any effects?

Does the bond length have any effect on the bond itself?
by Donavin Collins 3B
Sun Oct 27, 2019 9:00 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic VS. Covalent Bond
Replies: 8
Views: 27

Ionic VS. Covalent Bond

Hello, I'm wondering how exactly you know when it's an ionic bond or a covalent bond. Thank you.
by Donavin Collins 3B
Sun Oct 27, 2019 8:49 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 11
Views: 504

Re: Sigma vs. Pi

The first bond is a sigma bond, and then the next two would be pi bonds.
by Donavin Collins 3B
Sun Oct 27, 2019 8:13 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds
Replies: 14
Views: 55

Re: Covalent Bonds

Yes, I believe that covalent bonds are only between two nonmetals.
by Donavin Collins 3B
Sun Oct 27, 2019 8:02 pm
Forum: Ionic & Covalent Bonds
Topic: Homework
Replies: 13
Views: 100

Re: Homework

I think that we should be able to do problems from both sections.
by Donavin Collins 3B
Sun Oct 27, 2019 7:50 pm
Forum: Sigma & Pi Bonds
Topic: Single vs. Double bonds
Replies: 15
Views: 76

Re: Single vs. Double bonds

Since the double bond creates a stronger bond, the attraction pulls the atoms closer together which shortens the length of the bond.
by Donavin Collins 3B
Sun Oct 20, 2019 5:04 pm
Forum: DeBroglie Equation
Topic: DeBroglie Equation
Replies: 11
Views: 50

DeBroglie Equation

I have a quick question about the DeBroglie Equation. When exactly do we use it and what units does it deal with? Thank you!! :)
by Donavin Collins 3B
Sun Oct 20, 2019 4:59 pm
Forum: Einstein Equation
Topic: When do we use the Einstein Equation?
Replies: 14
Views: 104

When do we use the Einstein Equation?

Hello :) I'm kinda confused about when exactly we use the Einstein Equation. Also, is it something that's used a lot? Thank you!
by Donavin Collins 3B
Sun Oct 20, 2019 4:53 pm
Forum: DeBroglie Equation
Topic: Units for mass
Replies: 4
Views: 33

Re: Units for mass

I believe it wouldn't matter too much if you used grams or kgs, as long as it isn't specified to use a specific unit.
by Donavin Collins 3B
Sun Oct 20, 2019 4:50 pm
Forum: Properties of Light
Topic: HW problem A3
Replies: 2
Views: 23

Re: HW problem A3

I did this problem last week, and assuming that I'm correct I explained that the "extent of the change" (which is basically slope) decreases since the waves are more spread out. If the frequency were to increase, then the waves would be more squeezed together which creates a greater slope/...
by Donavin Collins 3B
Sun Oct 20, 2019 4:42 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 58
Views: 348

Re: Advice for studying

It's best to make sure you understand every/most concepts before moving onto the next. That way, you don't have to go back and start over. I would also recommend doing homework problems after you're finished as a way to quiz yourself.
by Donavin Collins 3B
Sun Oct 13, 2019 10:07 pm
Forum: *Black Body Radiation
Topic: Black Body
Replies: 6
Views: 63

Black Body

What exactly are black body and black body radiation? Also, when do they come up/are necessary?
by Donavin Collins 3B
Sun Oct 13, 2019 10:03 pm
Forum: Properties of Electrons
Topic: Photon
Replies: 5
Views: 24

Photon

What exactly is a photon?
by Donavin Collins 3B
Sun Oct 13, 2019 9:40 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 2297

Re: Test 1 [ENDORSED]

Does anyone know if sig figs were marked down if wrong?
by Donavin Collins 3B
Sun Oct 13, 2019 9:38 pm
Forum: Properties of Light
Topic: Reading entire chapters before class?
Replies: 4
Views: 36

Re: Reading entire chapters before class?

It would be more useful to do the homework problems while you're reading the chapters.
by Donavin Collins 3B
Sun Oct 13, 2019 9:35 pm
Forum: SI Units, Unit Conversions
Topic: Angstrom
Replies: 16
Views: 144

Re: Angstrom

Why isn't an Angstrom considered an SI unit?
by Donavin Collins 3B
Sun Oct 06, 2019 3:27 pm
Forum: Empirical & Molecular Formulas
Topic: Combustion Analysis
Replies: 6
Views: 59

Re: Combustion Analysis

When combustion occurs, can anything else be a product besides H2O and CO2?
by Donavin Collins 3B
Wed Oct 02, 2019 11:29 am
Forum: Balancing Chemical Reactions
Topic: Stoichiometric Coefficients [ENDORSED]
Replies: 8
Views: 67

Re: Stoichiometric Coefficients [ENDORSED]

Since we're looking for the lowest multiple for coefficients, would it be possible to divide? Or are you only allowed to multiply? (For example, would you be able to switch from 2H2O to just H2O?)
by Donavin Collins 3B
Tue Oct 01, 2019 5:59 pm
Forum: Balancing Chemical Reactions
Topic: Aqueous compounds
Replies: 5
Views: 263

Re: Aqueous compounds

Does a compound being aqueous, or any other physical state, affect the process of balancing a chemical reaction? Or is it just a detail that doesn't affect the problem?
by Donavin Collins 3B
Tue Oct 01, 2019 5:45 pm
Forum: Significant Figures
Topic: Sig figs confusion
Replies: 8
Views: 100

Re: Sig figs confusion

Can someone briefly explain sig figs? My current understanding is that it's when you round to a certain place (tenth, hundredth...), but this is a topic that I never really understood. Also, is there is certain area of chemistry where you use it frequently? Thanks.
by Donavin Collins 3B
Tue Oct 01, 2019 5:32 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent
Replies: 29
Views: 309

Re: Ionic vs Covalent

When compared to ionic bonds IN water, covalent bonds are stronger.

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