Exam (elaborations)
PURDUE CHEM 115 FINAL FALL23 with 100% correct answers
- Course
- Institution
PURDUE CHEM 115 FINAL FALL23 with 100% correct answers
[Show more]
Content preview
PURDUE CHEM 115 FINAL FALL23sig fig rules - correct answer ✔✔significant = nonzero, trapper zeros, trailing zeros IF there's a decimal
point
Mult/div = least # of sig figs
add/sub = least # of decimal places
law of conservation of mass - correct answer ✔✔atoms are not created or destroyed in a chemical
reaction
isotope - correct answer ✔✔atoms of the same element with a different number of neutrons and
therefore a different mass number
atomic mass of an element is... - correct answer ✔✔a weighted average of the masses of its isotopes
atomic structure - correct answer ✔✔dense positive nucleus, outer shell of electrons
groups and periods - correct answer ✔✔group = horizontal column
period = vertical row
limiting reactant - correct answer ✔✔the substance that controls the quantity of product that can form
in a chemical reaction
chemical vs nuclear reactions - correct answer ✔✔atoms in nuclear reactions change identity, involve
protons and neutrons, have an energy change, and are not affected by temp, catalysts, etc
nucleon - correct answer ✔✔protons and neutrons
nuclide - correct answer ✔✔nucleus with a particular composition
, spontaneous decay - correct answer ✔✔no collisions, alpha, beta, electron capture
induced reaction - correct answer ✔✔fission, fusion
penetrating power of radiation - correct answer ✔✔(low to high) alpha, beta, photon (y), neutron
when balancing nuclear reactions... - correct answer ✔✔conserve mass number and atomic number
(top = top, bottom = bottom)
more neutrons than protons... - correct answer ✔✔beta decay
more protons than neutrons... - correct answer ✔✔positron decay or electron capture
above the band of stability (atomic number > 83) - correct answer ✔✔alpha decay
band of stability chart - correct answer ✔✔above band B- decay, beyond band alpha decay, below band
B+ emission and e- capture
alpha emission - correct answer ✔✔helium-4 nucleus
+4 mass, +2 atomic number
beta emission - correct answer ✔✔electron, B- or positron, B+
+/- 1 atomic number
electron capture - correct answer ✔✔e-
-1 atomic number
photon (y) / gamma - correct answer ✔✔no effect on charge or mass
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 Sakayobako30. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now