Search found 22 matches
- Sun Oct 27, 2019 4:49 pm
- Forum: Ionic & Covalent Bonds
- Topic: Valence Electrons
- Replies: 16
- Views: 781
Re: Valence Electrons
For the s and p block, the number of valence electrons is the last number in the group. For the d block, you have to figure out the electron configuration to find how many electrons are in the outermost shell.
- Sun Oct 27, 2019 4:47 pm
- Forum: Ionic & Covalent Bonds
- Topic: Double bond placement
- Replies: 15
- Views: 886
Re: Double bond placement
Our TA told the HONC rule where H likes to have 1 bond, O likes to have 2, N likes to have 3, and C likes to have 4. If any of these elements are in the molecule you are trying to draw, follow this rule to help.
- Sun Oct 27, 2019 4:32 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs. Atomic Radii
- Replies: 4
- Views: 294
Re: Ionic vs. Atomic Radii
Ionic radii show the same trends on the periodic table as atomic radii. Also, cations seem to have smaller radii than their parent atoms and anions have larger radii than their parent atoms.
- Sun Oct 27, 2019 4:27 pm
- Forum: Ionic & Covalent Bonds
- Topic: Resonance
- Replies: 10
- Views: 425
Re: Resonance
When a molecule has resonance, it means that it can exist in different ways. The bonding can change on these molecules and it can be shown through different Lewis dot structures.
- Sun Oct 27, 2019 4:23 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionization
- Replies: 5
- Views: 340
Re: ionization
The highest ionization energy is at the top right of the periodic table and the lowest is at the bottom left. It is the amount of energy that is required to remove an electron from an atom.
- Sun Oct 20, 2019 8:39 pm
- Forum: Photoelectric Effect
- Topic: Speed of Light
- Replies: 29
- Views: 1618
Re: Speed of Light
The speed of light is a constant and is represented by the letter "c". It is approximately 3.0*10^8 m/s.
- Sun Oct 20, 2019 8:36 pm
- Forum: Photoelectric Effect
- Topic: Threshold Energy
- Replies: 7
- Views: 527
Re: Threshold Energy
The electrons will be emitted but KE will equal 0.
- Sun Oct 20, 2019 8:34 pm
- Forum: Photoelectric Effect
- Topic: Intensity v Frequency
- Replies: 5
- Views: 340
Re: Intensity v Frequency
The frequency is referring to how much energy a photon has and the intensity is referring to how many photons are present.
- Sun Oct 20, 2019 8:25 pm
- Forum: Photoelectric Effect
- Topic: The Work Function
- Replies: 15
- Views: 1028
Re: The Work Function
The work function and threshold energy is the least amount of energy needed to eject an electron from a metal.
- Sun Oct 20, 2019 4:48 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Shell, Subshell, Orbital Terminology
- Replies: 8
- Views: 568
Re: Shell, Subshell, Orbital Terminology
This is super helpful. Thank you for the clarification.
- Sun Oct 20, 2019 4:34 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Advice for studying
- Replies: 92
- Views: 7678
Re: Advice for studying
Doing the homework problems can be helpful because you really need to have an understanding of the concept before you can complete the problem so working on the problems will help you understand the concepts better.
- Sun Oct 13, 2019 9:06 pm
- Forum: Properties of Light
- Topic: Intensity & Amplitude
- Replies: 7
- Views: 469
Re: Intensity & Amplitude
The amplitude tells you the intensity of the light. The intensity is how bright it is. If the amplitude increases, so does the intensity.
- Sun Oct 13, 2019 8:58 pm
- Forum: Properties of Light
- Topic: Quick question on equations
- Replies: 5
- Views: 267
Re: Quick question on equations
It might be useful to know some of the basic equations just to make the calculations faster, but there will be an equation sheet on tests.
- Sun Oct 13, 2019 8:53 pm
- Forum: Properties of Light
- Topic: De Broglie's Equation
- Replies: 4
- Views: 228
Re: De Broglie's Equation
You can use the De Broglie equation to find out if a particle has wavelike properties by calculating the wavelength.
- Sun Oct 13, 2019 8:48 pm
- Forum: Properties of Light
- Topic: Photons
- Replies: 4
- Views: 259
Re: Photons
Apparently Einstein's equation E=mc^2 explains why photons have no mass. It is a particle of light and a stream of photons acts like a wave.
- Sun Oct 13, 2019 8:45 pm
- Forum: Properties of Light
- Topic: Photoelectric Effect
- Replies: 7
- Views: 384
Re: Photoelectric Effect
A vacuum provides a controlled environment where there is less chance of interference with outside factors
- Sun Oct 06, 2019 3:26 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Homework for Week 2
- Replies: 4
- Views: 312
Re: Homework for Week 2
I would say try to avoid the problems you did before because it's really just for practice and your own benefit. If a problem looks familiar, try to do a different one.
- Sun Oct 06, 2019 3:18 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Theoretical vs. Actual Yield
- Replies: 38
- Views: 14103
Re: Theoretical vs. Actual Yield
The actual yield is to take into account the flaws that could occur in an experiment. Human error could offset the expected results, or the theoretical yield.
- Sun Oct 06, 2019 3:18 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Theoretical vs. Actual Yield
- Replies: 38
- Views: 14103
Re: Theoretical vs. Actual Yield
The actual yield is to take into account the flaws that could occur in an experiment. Human error could offset the expected results, or the theoretical yield.
- Sun Oct 06, 2019 3:11 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: sig figs
- Replies: 20
- Views: 990
Re: sig figs
How do I tell what 0's are significant and which aren't?
- Sun Oct 06, 2019 3:10 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Naming Formulas
- Replies: 3
- Views: 266
Re: Naming Formulas
I think he said anything that's a constant or a formula will be given for the test.
- Sun Oct 06, 2019 3:08 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Mole help [ENDORSED]
- Replies: 8
- Views: 474
Re: Mole help [ENDORSED]
A mole is a unit of measurement similar to a dozen. When you say you have a dozen of something, you have 12 of it. When you say you have a mole of something, it means there are 6.022*10^23 of it