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CHEM 120 Week 8 Final Exam Review (Version 2), Best document for preparation, Verified And Correct Answers Course Number: CHEM120 Course Title: Introduction to General, Organic & Biological Chemistry with Lab Chamberlain College of Nursing CA$17.44   Add to cart
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CHEM 120 Week 8 Final Exam Review (Version 2), Best document for preparation, Verified And Correct Answers Course Number: CHEM120 Course Title: Introduction to General, Organic & Biological Chemistry with Lab Chamberlain College of Nursing
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CHEM 120 Week 8 Final Exam Review (Version 2), Best document for preparation, Verified And Correct Answers Course Number: CHEM120 Course Title: Introduction to General, Organic & Biological Chemistry with Lab Chamberlain College of Nursing

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  • February 14, 2023
  • 8
  • 2022/2023
  • Exam (elaborations)
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  • chem 120 week 8 final exam review version 2
  • best document for preparation
  • verified and correct answers course number chem120 course title introduction to general
  • organic amp biological chemis

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CHEM 120 Week 8 Final Exam Review
Course Number:CHEM120
Course Title:Introduction to General,Organic & Biological Chemistry with Lab

 Well Explained Answers
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, CHEM 120: Final Review
1. Question: Know what is the atomic number, atomic mass, protons, neutrons &
electrons

Atomic number – is the number of protons in the nucleus of an atom of any
element
Atomic mass – is expressed in amu; is the wighted average
Protons – are positively charged particles in the nucleus
Neutron – are neutral, have no electrical charge
Electrons – are negatively charged particles in the nucleus
Atomic number = number of protons
Atomic number – (minus) atomic mass = neutrons

2. Question: Describe the shapes of molecules H2S, CBr4, & PCl3

H2S – bent
 Number of bonded atoms: 2
 Number of lone pairs: 2
 Number of electron sets: 4
CBr4 – tetrahedral
 Number of bonded atoms: 4
 Number of lone pairs: 0
 Number of electron sets: 4
PCl3 – pyramidal
 Number of bonded atoms: 3
 Number of lone pairs: 1
 Number of electron sets: 4
3. Question: Calculating types of bonding (ionic, covalent, nonpolar covalent)

Subtract the smaller EN value from the larger EN value
 0 – 0.4 = nonpolar covalent
 > (greater than) 0.4 – 1.7 = polar covalent
 > (greater than) 1.7 = ionic bond
Ionic bonds – is a bond that forms when electrons is being transferred from one form to
another form, which results in positive & negative ions
Covalent bond – a bond formed when atoms share electrons
Nonpolar covalent bonds – when the EN is very similar between 2 atoms
Polar covalent – when the EN is different between 2 atoms

4. Question: Non – polar covalent bonds & polar covalent bonds & electron sharing

Bonding electron pair – the shared pair of electrons in covalent bonds

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