CHEMISTRY COMMUNITY

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

The speed of light is a constant and is represented by the letter "c". It is approximately 3.0*10^8 m/s.

Kimme Chun 1I

The electrons will be emitted but KE will equal 0.

Kimme Chun 1I

The frequency is referring to how much energy a photon has and the intensity is referring to how many photons are present.

Kimme Chun 1I

The work function and threshold energy is the least amount of energy needed to eject an electron from a metal.

Kimme Chun 1I

This is super helpful. Thank you for the clarification.

Kimme Chun 1I

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.

Kimme Chun 1I

The amplitude tells you the intensity of the light. The intensity is how bright it is. If the amplitude increases, so does the intensity.

Kimme Chun 1I

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.

Kimme Chun 1I

You can use the De Broglie equation to find out if a particle has wavelike properties by calculating the wavelength.

Kimme Chun 1I

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.

Kimme Chun 1I

A vacuum provides a controlled environment where there is less chance of interference with outside factors

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

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.

Kimme Chun 1I

How do I tell what 0's are significant and which aren't?

Kimme Chun 1I

I think he said anything that's a constant or a formula will be given for the test.

Kimme Chun 1I

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

CHEMISTRY COMMUNITY

Search found 22 matches

Re: Valence Electrons

Re: Double bond placement

Re: Ionic vs. Atomic Radii

Re: Resonance

Re: ionization

Re: Speed of Light

Re: Threshold Energy

Re: Intensity v Frequency

Re: The Work Function

Re: Shell, Subshell, Orbital Terminology

Re: Advice for studying

Re: Intensity & Amplitude

Re: Quick question on equations

Re: De Broglie's Equation

Re: Photons

Re: Photoelectric Effect

Re: Homework for Week 2

Re: Theoretical vs. Actual Yield

Re: Theoretical vs. Actual Yield

Re: sig figs

Re: Naming Formulas

Re: Mole help [ENDORSED]