Search found 24 matches
- Fri Dec 06, 2019 3:18 am
- Forum: Ideal Gases
- Topic: Reading the textbook
- Replies: 262
- Views: 156139
Re: Reading the textbook
I definitely feel that the textbook has a lot of information that the finals and tests won't cover.
- Fri Dec 06, 2019 3:17 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3895116
Re: Post All Chemistry Jokes Here
When you tell a chemistry joke but there is no reaction
- Fri Dec 06, 2019 3:16 am
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 464383
Re: Rusty on High School Chem [ENDORSED]
Practice problems in my opinion are the best to review.
- Fri Dec 06, 2019 3:12 am
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student [ENDORSED]
- Replies: 297
- Views: 453943
Re: Advice from a Medical Student [ENDORSED]
Med school seems daunting right now but your advice is helping.
- Fri Dec 06, 2019 3:11 am
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 419749
Re: Final Jitters
Sit, breathe, and tell yourself that you will do well! Even if you don't, I'm sure you tried your best.
- Fri Nov 22, 2019 2:57 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 3680
Re: Best Way To Study?
Do every homework problem introduced, and the practice problems Dr. Lavelle posts are really good too.
- Fri Nov 22, 2019 2:53 pm
- Forum: Ideal Gases
- Topic: Reading the textbook
- Replies: 262
- Views: 156139
Re: Reading the textbook
The textbook does have a lot of extra information that may not be covered, but it's a good comprehensive guide and the practice problems it introduces are good to do before midterms and finals.
- Fri Nov 22, 2019 2:04 pm
- Forum: Limiting Reactant Calculations
- Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
- Replies: 68
- Views: 7380
Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Your final answer needs to have correct sig figs for full points I believe, and I think there is partial credit for longer problems.
- Fri Nov 22, 2019 2:01 pm
- Forum: Properties of Light
- Topic: Chemistry Community Posts
- Replies: 10
- Views: 837
Re: Chemistry Community Posts
It's 5 every week, so nothing rolls over
- Mon Nov 18, 2019 1:31 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation [ENDORSED]
- Replies: 73
- Views: 9487
Re: Rydberg equation [ENDORSED]
It is used for questions that involve wavelengths of light that are emitted when electrons change energy levels.
- Mon Nov 18, 2019 1:31 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation [ENDORSED]
- Replies: 73
- Views: 9487
Re: Rydberg equation [ENDORSED]
It is used for questions that involve wavelengths of light that are emitted when electrons change energy levels.
- Sun Nov 17, 2019 9:53 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: How to tell?
- Replies: 11
- Views: 960
Re: How to tell?
Often acids will contain either H or OH
- Sun Nov 17, 2019 9:53 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Problem 4A.9) 7th edition of the textbook [ENDORSED]
- Replies: 7
- Views: 37860
Re: Problem 4A.9) 7th edition of the textbook [ENDORSED]
When energy is absorbed by water, does it release heat?
- Sun Nov 17, 2019 9:52 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram and Ecell [ENDORSED]
- Replies: 29
- Views: 114670
Re: Cell Diagram and Ecell [ENDORSED]
How do you tell the difference between when it is an anode vs when it is cathode?
- Sun Nov 17, 2019 9:49 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Wavelength Plausibility
- Replies: 31
- Views: 2766
Re: Wavelength Plausibility
Wouldn't the difference from 720 to 700 make a significant enough difference?
- Fri Nov 01, 2019 3:14 am
- Forum: Resonance Structures
- Topic: Delocalization vs. Resonance
- Replies: 8
- Views: 3009
Re: Delocalization vs. Resonance
Resonance: Movement of electrons within molecules.
Delocalization: Electrons ability to de localize, or spread out into more space.
Delocalization: Electrons ability to de localize, or spread out into more space.
- Fri Nov 01, 2019 3:12 am
- Forum: Ionic & Covalent Bonds
- Topic: Valence Electrons?
- Replies: 15
- Views: 1055
Re: Valence Electrons?
Valence electrons for the non metals can basically be counted just by going across the periodic table, for example; Li:1, Be:2, B:3, C:4, N:5, O:6, F:7, and Ne:8. And that pattern follows down the columns. For non metals, count across the periodic table. Each corresponding element should have the sa...
- Fri Nov 01, 2019 3:11 am
- Forum: Bond Lengths & Energies
- Topic: Lattice Energy
- Replies: 9
- Views: 464
Re: Lattice Energy
It's just the energy that is released when oppositely charged gas ions form a solid
- Fri Nov 01, 2019 3:07 am
- Forum: Electronegativity
- Topic: Electronegativity
- Replies: 11
- Views: 629
Re: Electronegativity
Electronegativity is the ability of an atom to attract electrons to itself when it is part of a compound. I think electronegativity decreases down a group and increases across a period. It is essentially how well an atom within a compound can attract electrons. Electronegativity decreases down group...
- Fri Oct 04, 2019 1:06 pm
- Forum: Significant Figures
- Topic: When to round for sig figs?
- Replies: 12
- Views: 545
Re: When to round for sig figs?
Always round at the end.
- Fri Oct 04, 2019 1:02 pm
- Forum: General Science Questions
- Topic: Different forms of Energy
- Replies: 3
- Views: 690
Re: Different forms of Energy
This is a pretty broad question. There are many different types of energy. Thermal, electrical, potential, kinetic, mechanical are all types of energy. They each have their different attributes, however, in terms of defining them as "energy." In other words, there are different factors tha...
- Fri Oct 04, 2019 12:59 pm
- Forum: General Science Questions
- Topic: Shower Thoughts: SUN
- Replies: 2
- Views: 244
Re: Shower Thoughts: SUN
The sun does not employ typical combustion reactions. Instead of oxygen, it uses hydrogen molecules to convert them into helium. The fusion reaction produces heat and light.
- Fri Oct 04, 2019 12:56 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 464383
Re: Rusty on High School Chem [ENDORSED]
I recommend buying a 3D molecule model kit (there's also a free program that Professor Lavelle provides for us) It makes things a lot easier when learning shapes and arrangements.
- Fri Oct 04, 2019 12:54 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Geometry vs molecular shape
- Replies: 6
- Views: 1030
Re: Geometry vs molecular shape
Geometry means how both bond electrons and lone pairs are arranged, whereas shape only refers to the arrangement of the bond electrons.