CHEM 120 FINAL EXAM WITH CORRECT QUESTIONS AND ANSWERS 2025

CHEM 120 FINAL EXAM WITH
CORRECT QUESTIONS AND
ANSWERS 2025

 ionic compounds - CORRECT-ANSWER-deals with charged particles

 -oppositely charged particles are attracted to each other

 -look for presence of metals and polyatomic ions

 molecular compounds - CORRECT-ANSWER-share electrons

 -nonmetals

 -no polyatomic ions unless its an acid

 Type I metals - CORRECT-ANSWER-ionic compounds

 -group 1A,2A,3A

 -one type of charge state

 -Name of metal +ion

 -if metal+nonmetal:

 name of metal+base name of nonmetal +ide

 -if metal+polyatomic ion:

 name of metal+name of polyatomic ion

 Type II metals - CORRECT-ANSWER-ionic compounds

 -charge states vary

 -Name of metal+it's charge as a roman numeral+ion

 -if metal+nonmetal:

 name of metal+its charge as a roman numeral+base name of nonmetal+ide

,  -if metal+polyatomic ion:

 name of metal+its charge as a roman numeral+name of polyatomic ion

 Molecular compounds: nonmetal+nonmetal - CORRECT-ANSWER-prefix+name of 1st

nonmetal+prefix+name of second nonmetal

 -no mono for first nonmetals

 Acids - CORRECT-ANSWER-are molecular compounds but behave like ionic

compounds when put in water

 -dissolved in water(aqueous)

 -binary or oxy acids

 Binary acids - CORRECT-ANSWER-hydro+base name of second nonmetal+ic+acid

 -hydro means no oxygen present

 Oxy acids - CORRECT-ANSWER-contains oxygen as a part of a polyatomic ion

 -ate becomes ic

 -ite becomes ous

 -ex: HNO₃→nitric acid

 ACID EXCEPTIONS - CORRECT-ANSWERH₂SO₄→sulfuric acid

 H₂SO₃→sulfurous acid

 H₃PO₄→phosphoric acid

 H₃PO₃→phosphorous acid

 hydrates - CORRECT-ANSWERname of ionic compound∙prefix+hydrate

 Planck's constant - CORRECT-ANSWERh=6.626* 10⁻³⁴joules seconds

 used in formulas for energy, wavelength, and frequency

 E=h*frequency(v)