Search found 30 matches
- Sat Nov 09, 2019 7:37 pm
- Forum: Electronegativity
- Topic: Differences
- Replies: 3
- Views: 54
Differences
Difference between ionization, electron affinity, electronegativity?
- Sat Nov 09, 2019 7:33 pm
- Forum: Dipole Moments
- Topic: Electronegativity on Dipoles
- Replies: 3
- Views: 35
Electronegativity on Dipoles
How does electronegativity play a factor in dipoles? If electro negativities aren't exactly equal should we say there is a dipole moment?
- Sat Nov 09, 2019 7:31 pm
- Forum: Dipole Moments
- Topic: BOND STRENGTH
- Replies: 4
- Views: 44
BOND STRENGTH
Will a molecule with 3 single bonds and one double bond be considered polar or nonpolar? Im confused on how to interpret this.
- Sat Nov 09, 2019 7:27 pm
- Forum: Dipole Moments
- Topic: Dipole Dipole
- Replies: 3
- Views: 30
Dipole Dipole
When looking at a molecule, how do we know there will be a dipole dipole moment? Are there any tricks to determining this?
- Sat Nov 09, 2019 7:26 pm
- Forum: Bond Lengths & Energies
- Topic: Bonds
- Replies: 2
- Views: 70
Bonds
In water, is there a difference in the bond length and strength with hydrogen and covalent bonds?
- Sun Nov 03, 2019 6:30 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Copper and Chromium
- Replies: 1
- Views: 47
Copper and Chromium
Do we need to know the weird/ special electron configurations for Copper and Chromium?
- Sun Nov 03, 2019 6:26 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation
- Replies: 3
- Views: 88
Rydberg equation
When do you know to use the rydberg equation? Also I'm not sure if I wrote the equation wrong but is the Rydberg constant multiplied by another constant or?
- Sun Nov 03, 2019 6:23 pm
- Forum: Trends in The Periodic Table
- Topic: Atomic Radii
- Replies: 11
- Views: 352
Atomic Radii
When do we use atomic radius in problems? What is it useful for and what exactly is it?
- Sun Nov 03, 2019 6:20 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Nodes
- Replies: 1
- Views: 44
Nodes
What are nodes? How do they pertain to orbitals and what is their importance?
- Sun Nov 03, 2019 6:18 pm
- Forum: *Shrodinger Equation
- Topic: Shrodinger Equation
- Replies: 2
- Views: 148
Shrodinger Equation
When do you know when to use the Shrodinger Equation? What phrases or words in a question hint towards using the formula.
- Wed Oct 23, 2019 4:05 pm
- Forum: Trends in The Periodic Table
- Topic: blocks
- Replies: 13
- Views: 194
blocks
Are we going to need to remember the groupsfor s block, p block, and d block???
- Wed Oct 23, 2019 3:44 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: E- removal
- Replies: 3
- Views: 40
E- removal
Why is it harder to remove a second electron from an element?
- Wed Oct 23, 2019 3:39 pm
- Forum: Trends in The Periodic Table
- Topic: Location of elements
- Replies: 12
- Views: 268
Location of elements
Are we expected to know where solids, nonmnetals, liquids, gas, etc. are located on the periodic table?
- Wed Oct 23, 2019 3:34 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Ion
- Replies: 3
- Views: 29
Ion
Im confused what the ground state of an ion is? An ion is always charged?
- Wed Oct 23, 2019 3:09 pm
- Forum: Trends in The Periodic Table
- Topic: Trend in periodic table
- Replies: 6
- Views: 50
Trend in periodic table
So as we move across a row on the periodic table, that accounts to how many valance electrons are in the outer shell. What does going down the periodic table mean?
- Fri Oct 18, 2019 10:19 am
- Forum: Properties of Electrons
- Topic: Delta
- Replies: 3
- Views: 68
Delta
Can someone explain why delta is negative when the change in an electron goes from N=1 to N=3?
- Fri Oct 18, 2019 10:14 am
- Forum: Properties of Light
- Topic: Wavelength and Frequency
- Replies: 2
- Views: 60
Wavelength and Frequency
I need help understanding how one wavelength can have multiple peaks / cyles within a given time, lets say one second, and another will have less cyles within that second (longer wavelengths). Can someone explain frequency to me and how it affects amplitude, intensity of light, and the number of pho...
- Fri Oct 18, 2019 10:11 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Bohr's Equation
- Replies: 5
- Views: 97
Re: Bohr's Equation
I honestly doubt it, since most the time he gives us the front of the test with equations and names. I would look at previous tests and see if it was required to have it memorized
- Fri Oct 18, 2019 10:09 am
- Forum: Photoelectric Effect
- Topic: Spectrum of light
- Replies: 6
- Views: 81
Spectrum of light
Can someones list the light spectrum in order from highest energy/frequency to lowest?
Also are we required to have these memorized?
Also are we required to have these memorized?
- Fri Oct 18, 2019 10:04 am
- Forum: Photoelectric Effect
- Topic: Photoelectric Effect
- Replies: 6
- Views: 101
Photoelectric Effect
Just checking to make sure I understood this concept;
If the photons energy is the same as the work energy needed to remove an electron, how would the electron move away from the metal? Would its kinetic energy just be 0 and not leave the metal?
If the photons energy is the same as the work energy needed to remove an electron, how would the electron move away from the metal? Would its kinetic energy just be 0 and not leave the metal?
- Sun Oct 13, 2019 8:42 pm
- Forum: Properties of Light
- Topic: Wavelength
- Replies: 4
- Views: 56
Wavelength
So lets say a problem states the velocity, how do you compute for the wavelength of an electron with just the velocity given?
- Sun Oct 13, 2019 8:38 pm
- Forum: Properties of Electrons
- Topic: N increase
- Replies: 2
- Views: 13
N increase
What happens to the electron when n is increasing?
- Sun Oct 13, 2019 8:37 pm
- Forum: Properties of Light
- Topic: Photoelectric Effect
- Replies: 1
- Views: 27
Photoelectric Effect
So in the photoelectric effect, light removes an electron from a surface, but on other problems light is a wave. How can we distinguish when it is acting like a wave or particle?
- Sun Oct 13, 2019 8:35 pm
- Forum: Properties of Light
- Topic: Photons
- Replies: 4
- Views: 62
Photons
What exactly is a photon and how do they not have a rest mass when they do have energy and momentum?
- Mon Oct 07, 2019 4:23 pm
- Forum: Empirical & Molecular Formulas
- Topic: Empirical Formula Help [ENDORSED]
- Replies: 7
- Views: 320
Empirical Formula Help [ENDORSED]
When trying to find the empirical formula, when do we divide the mole by the smallest # of moles calculated? I'm not really sure what the next step is after you find the amount of moles in an element of a compound (g/(g/mol))
- Thu Oct 03, 2019 2:23 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Delta
- Replies: 2
- Views: 82
Delta
I'm still confused what the delta over the reaction means. I understand that it means heat, but do we just get rid of a CO2 from the product?
- Thu Oct 03, 2019 2:19 pm
- Forum: Empirical & Molecular Formulas
- Topic: Molecular formula
- Replies: 2
- Views: 62
Molecular formula
What is the formula (molar mass of ACTUAL molecule / molar mass of emirical formula) used for? and how do you know when to use it?
- Thu Oct 03, 2019 1:22 pm
- Forum: Limiting Reactant Calculations
- Topic: Percentage Yields
- Replies: 8
- Views: 140
Percentage Yields
What does a percentage yield mean and what numbers classify as high yields?
I understand that we want high percentage yields, correct?
I understand that we want high percentage yields, correct?
- Thu Oct 03, 2019 1:12 pm
- Forum: Balancing Chemical Reactions
- Topic: Fractions in front of compounds
- Replies: 12
- Views: 186
Fractions in front of compounds
When balancing out equations, we should have whole numbers always. Do we only multiply each compound on both sides of the equation when there is a fraction on either side of the problem or would there be other scenarios when we would multiply to each side?
- Thu Oct 03, 2019 1:08 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Avogadro's Number?
- Replies: 16
- Views: 395
Avogadro's Number?
I know avogadros number is 6.022 x 10^-23, and it is a constant. I'm just unsure when I should be using it in an equation because most problems do not tell you when to use it.