CHEMISTRY COMMUNITY

005095564

Difference between ionization, electron affinity, electronegativity?

005095564

How does electronegativity play a factor in dipoles? If electro negativities aren't exactly equal should we say there is a dipole moment?

005095564

Will a molecule with 3 single bonds and one double bond be considered polar or nonpolar? Im confused on how to interpret this.

005095564

When looking at a molecule, how do we know there will be a dipole dipole moment? Are there any tricks to determining this?

005095564

In water, is there a difference in the bond length and strength with hydrogen and covalent bonds?

005095564

Do we need to know the weird/ special electron configurations for Copper and Chromium?

005095564

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?

005095564

When do we use atomic radius in problems? What is it useful for and what exactly is it?

005095564

What are nodes? How do they pertain to orbitals and what is their importance?

005095564

When do you know when to use the Shrodinger Equation? What phrases or words in a question hint towards using the formula.

005095564

Are we going to need to remember the groupsfor s block, p block, and d block???

005095564

Why is it harder to remove a second electron from an element?

005095564

Are we expected to know where solids, nonmnetals, liquids, gas, etc. are located on the periodic table?

005095564

Im confused what the ground state of an ion is? An ion is always charged?

005095564

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?

005095564

Can someone explain why delta is negative when the change in an electron goes from N=1 to N=3?

005095564

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...

005095564

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

005095564

Can someones list the light spectrum in order from highest energy/frequency to lowest?
Also are we required to have these memorized?

005095564

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?

005095564

So lets say a problem states the velocity, how do you compute for the wavelength of an electron with just the velocity given?

005095564

What happens to the electron when n is increasing?

005095564

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?

005095564

What exactly is a photon and how do they not have a rest mass when they do have energy and momentum?

005095564

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))

005095564

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?

005095564

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?

005095564

What does a percentage yield mean and what numbers classify as high yields?
I understand that we want high percentage yields, correct?

005095564

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?

005095564

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.

CHEMISTRY COMMUNITY

Search found 30 matches

Differences

Electronegativity on Dipoles

BOND STRENGTH

Dipole Dipole

Bonds

Copper and Chromium

Rydberg equation

Atomic Radii

Nodes

Shrodinger Equation

blocks

E- removal

Location of elements

Ion

Trend in periodic table

Delta

Wavelength and Frequency

Re: Bohr's Equation

Spectrum of light

Photoelectric Effect

Wavelength

N increase

Photoelectric Effect

Photons

Empirical Formula Help [ENDORSED]

Delta

Molecular formula

Percentage Yields

Fractions in front of compounds

Avogadro's Number?