Summary
Summary AP Chemistry Exam Important Concepts 2024
- Course
- Institution
AP Chemistry Exam Important Concepts 2024
[Show more]
Content preview
AP Chemistry Exam Important Concepts2024
How is the molar mass given on the periodic table calculated? - It is the average of
the mass numbers of all known isotopes weighted by their percent abundance
periods - horizontal rows of the periodic table
groups - vertical columns of the periodic table
mole - 6.022 * 10^23
STP - P = 1 atm, T = 273K
volume of 1 mole of gas at STP - 22.4 liters
molarity - moles of solute / liters of solution
molality - moles of solute / kilograms of solvent
4 quantum numbers - shell, subshell, orbital, spin
,AP Chemistry Exam Important Concepts
2024
electrons with higher shell number vs electrons with lower shell number - more
energy, less stability
subshell - describes shape of an electron's orbital
shapes of s and p - s subshells are spheres, while p are dumbbell shaped
aufbau principle - when building up the electron configuration, electrons are
placed in orbitals, subshells, and shells in increasing energy order
pauli exclusion principle - within an atom, no two electrons can have the same set
of quantum numbers
Hund's rule - when an electron is added to a subshell, it will always occupy an
empty orbital if one is available
What does it mean to say that the energy of electrons is quantized? - Electrons
can exist only at specific energy levels, separated by specific intervals
, AP Chemistry Exam Important Concepts
2024
energy of an electron in hydrogen - (-2.178 * 10^-18)/(n^2) Joules
When atoms absorb electromagnetic radiation, __________ - electrons jump to
higher energy levels
relationship between change in energy level and the electromagnetic radiation
absorbed or emitted - delta E = h*v
h - 6.63 * 10^-34
Dalton - said that there are many different kinds of atoms (elements) which
combine to form compounds in the same ratios
development of the periodic table - Dmitri Mendeleev and Lothar Meyer
independently proposed arranging elements into early versions of the periodic
table
Thomson's experiment - due to the deflection of charges in a cathode ray tube, he
said that atoms are composed of positive and negative charges
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Ellah1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72964 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now