Nuclear Chemistry

Nuclear Chemistry Objectives• Students will be able to identify what radioisotopes

are and why they undergo radioactive decay.

• Students will demonstrate understanding of radioactive decay through applications and graphing.

• Students will understand and classify nuclear reactions by the types of radiation produced.

ICP : 10/28

Objectives:• Atomic Structure Unit Exam• I can use the band of stability graph to predict if

an isotope is radioactive.

Homework: Band of Stability Wksht.: Read and plot isotopes

on band of stability graph.

ICP : 10/29Due:Band of Stability Worksheet

Objectives:• I can use the band of stability graph to predict if

an isotope is radioactive.

Homework: Band of Stability Wksht.: Graph isotopes and

predict if radioactive.

Nuclear Band of Stability

http://www.hasdeu.bz.edu.ro/softuri/fizica/mariana/Atomica/Table/lessons/11nuclear/nuclear.htm

Band of Stability Graph Analysis

1. What subatomic particles determined if each isotope had a stable nucleus?

2. Explain how the band of stability graph helps you determine if an isotope has a stable nucleus or not?

3. Does Xe-131 or Xe-135 have an unstable nucleus? Explain how you know this.

Nuclear Band of Stability

http://www.hasdeu.bz.edu.ro/softuri/fizica/mariana/Atomica/Table/lessons/11nuclear/nuclear.htm

Radioisotopes Radioisotopes • Atoms with unstable nuclei.• The ratio of protons-to-neutrons is not adequate

for nuclear stability.• Most elements need more neutrons than protons to

maintain stability within the nucleus.

• A reaction that occurs within the nucleus of a radioisotope in order to stabilize it.

• Also called: radioactive decay; radioactivity

• Spontaneous Reactions (occurs naturally).

• Reaction rates (speed of reactions) remain constant.

Nuclear Reactions

ICP : 10/30Objectives:• I can use the band of stability graph to predict

if an isotope is radioactive.• I can model, graph, and interpret radioactivity.

Homework:• Radiometric Dating Graph Worksheet

Radioactive Decay Graph

astronomy.nmsu.edu

Chemistry I : 10/31Objectives:• I can use the band of stability graph to predict

if an isotope is radioactive.• I can model, graph, and interpret radioactivity.• Complete M&Mium Lab

Homework:• Complete post-lab qts. for M&Mium lab.• Study for Radioactive quiz (tomorrow).

Radioactive Decay LabPurpose: Simulate and graph the radioactive decay

of an artificial radioisotope, M&Mium.

Pre-Lab Questions: 1. What side of the candy represents the parent isotope?2. What side of the candy represent the daughter isotope?3. What is the half-life of the M&Mium radioisotope?

Hypothesis: Complete on lab.

thefoxisblack.com

usd314.k12.ks.us

ICP : 11/1Infinite Campus Update:• Atomic Structure Exam (34pts.)• Band of Stability Wksht./Bell Ringer (11pts.)• Radioactivity Graphing Wksht. (10pts.)Due: • M&Mium Radioactive Decay LabObjectives:• I can use the band of stability graph to predict

if an isotope is radioactive.• I can model, graph, and interpret radioactivity. • Radioactive Decay Quiz.

Radioactive Decay Lab: Data Table Number of Half-Lives

Total Time(seconds)

# of M&Miums(parent isotope)

Daughter Isotope(decayed)

0

1

2

3

4

5

6

7

ICP : 11/4Infinite Campus Update:• M&Mium Lab (25pts.)• Radioactivity Quiz (16pts.)Objectives:• Review Radioactivity Quiz• I can model, graph, assess radioactivity.• Review Atomic Structure Exam

Homework:• Radioactivity problems

Radioactive Decay Quiz

Nuclear Band of Stability

http://www.hasdeu.bz.edu.ro/softuri/fizica/mariana/Atomica/Table/lessons/11nuclear/nuclear.htm

Radioactive Decay Graph

astronomy.nmsu.edu

ICP : 11/5

Due: • Radiometric Dating Graph• M&Mium Lab corrections

Objectives:• I can model, graph, and interpret radioactivity.

Homework:Radioisotopes and Radioactive Decay WorksheetStudy for make-up exam over Atomic Structure

Radioactive Decay Graph

astronomy.nmsu.edu

Nuclear Reactions: Half-Life

Transmutation: An element is converted into a different element during a nuclear reaction.

• Half-Life: The time it takes for half of a radioisotope sample (parent isotope) to decay into a more stable isotope (daughter isotope). Example: C-14 converted to N-14

ICP : 11/6

Objectives:• I can model, graph, and interpret radioactivity. • I can model electron arrangement in an atom.

Homework:Radioisotopes and Radioactive Decay WorksheetStudy for make-up exam over Atomic Structure (Thurs.)

ICP : 11/7Due:Radioactivity Article

Objectives:• Atomic Structure Make-up Exam• I can model, graph, and interpret radioactivity. • I can model electron arrangement in an atom.

Homework:Radioisotopes and Radioactive Decay WorksheetStudy for make-up exam over Atomic Structure (Thurs.)

Radiometric Dating Article

• Read and summarize the article on radiometric dating.