Exam (elaborations)
SCI 220 Final Exam Questions And Answers Latest Update
- Course
- SCI 220
- Institution
- University Of Phoenix
SCI 220 Final Exam Questions And Answers Latest Update
[Show more]
Content preview
Solution 2024/2025Pepper
SCI 220 Final Exam Questions And Answers
Latest Update
applied vs. basic research ANS✔✔ applied = study for practical use of
knowledge; expect useful result
basic = study to increase knowledge; may not be practical
elements are defined by: ANS✔✔ number of protons = atomic number
what makes up almost all the volume of an atom? what makes up the most
mass? ANS✔✔ volume = electrons
mass = nucleus
Thompson model of the atom ANS✔✔
Rutherford model of the atom ANS✔✔
rules to remember when filling orbitals ANS✔✔ 2 electrons per orbital; 1
orbital in s, 3 orbitals in p, 5 orbitals in d, 7 orbitals in f subshell; follow
arrows on given chart
properties of metals/non-metals/noble gases ANS✔✔ metals = left side of
table; tend to lose electrons
non-metals = right side of table; tend to gain electrons
noble gases = very stable and have 8 valence electrons
, Solution 2024/2025
Pepper
positive ions vs. negative ions ANS✔✔ positive = cations; ion has same
name as element; transition metals need roman numeral to show charge on
ion
negative = anions; form from nonmetal elements; replace end of name with
-ide
ionic vs. covalent ANS✔✔ ionic = very strong; between to ions (cation and
anion); i.e. NaCl
covalent = electrons are shared; usually when both are not metals; diatomic
(H N F O I C B)
electronegativity and polar/nonpolar bonds ANS✔✔ electronegativity = pull
on electrons around nucleus; if they're really close -> covalent; if they're
not so close -> polar covalent; if they're far apart -> ionic
naming ionic compounds ANS✔✔ if anion is single element, name ends in -
ide (MgS = magnesium sulfide); transition metals need roman numerals;
use crossover method to ensure net zero charge
naming covalent compounds ANS✔✔ both parts nonmetal; positive charge
comes first; single atoms end in -ide; if more than one, use numerical
prefixes
aliphatic types ANS✔✔ alkanes = all single bonds; name always ends in -
ane
alkenes = at least one double bond; name ends in -ene; if more than one
double bond, ending becomes -diene (2), -triene (3), ...; cis- means
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 Schoolflix. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78252 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now