Exam 3: CHEM 120/ CHEM120 (NEW 2026/ 2027 Update) Introduction to General, Organic, and Biological Chemistry with Lab Review| Questions & Answers | Grade A| 100% Correct (Verified Solutions)-Chamberlain

Examl 3:l CHEMl 120/l CHEM120l (NEWl
2026/l 2027l Update)l Introductionl tol
General,l Organic,l andl Biologicall
Chemistryl withl Labl Review|l Questionsl &l
Answersl |l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-Chamberlain

QUESTION
Alphal decay


Answer:
Decreasel atomicl numberl byl 2l andl massl numberl byl 4




QUESTION
Betal decay



Answer:
Increasel atomicl numberl byl 1,l nol changel inl massl number




QUESTION
Positronl emission


Answer:
Decreasel atomicl numberl byl 1,l nol changel inl massl number

,QUESTION
Gammal decay


Answer:
Nol changel inl atomicl numberl orl massl number




QUESTION
Electronl capture



Answer:
Decreasel atomicl numberl byl 1,l nol changel inl massl number




QUESTION
Alphal decayl ofl Thulium-170



Answer:
Twol protonsl andl twol neutronsl arel releasedl froml thel nucleusl asl anl alphal particle




QUESTION
Betal decayl ofl Bromine-80


Answer:
Br→80l 35Bl +l Krort,l 36

, QUESTION
Positronl emissionl ofl Phosphorus-28



Answer:
P→28l 15l +1Pl Bl +l Sil 14




QUESTION
Halfl life


Answer:
Timel requiredl forl halfl ofl thel remainingl unstablel isotopel tol decayl byl 50%




QUESTION
Examplel ofl halfl life



Answer:
Startingl withl al 10l graml sample,l afterl 1l halfl lifel youl wouldl havel 5l g,l andl afterl twol
half-lives,l youl wouldl havel 2.5l grams




QUESTION
EMl (electromagnetic)l radiation


Answer:
Radiationl withoutl restingl mass,l includesl gamma,l visiblel light,l radiol waves,l X-rays,l UVl
rays,l IRl radiation,l microwaves