Lesson Plan Day: 49            10/31

Teacher: P. Kirk

Subject: Science

Course: Chemistry


Structure of the nucleus and the "loss" of mass caused as nuclear matter is converted to binding energy. Stable and unstable ratios of protons and neutrons.  How nuclear reactions affect the nucleus of an atom. 

Radioactive decay leads to more stable isotopes. During decay particles and energy are released.  Half-life is the time needed for one half of an amount of radioactive material to decay. Radioactive nuclides become stable through a series of decays. Nuclides can become radioactive naturally or artificially.  

Ionizing radiation can harm living tissue. Film and electronic methods can be used to detect radiation. Radioactivity has many applications. Storage and disposal of nuclear waste pose important concerns. 

In fission, atoms split into nearly equal parts and energy. Nuclei combine in nuclear fusion. 


HS.PS1.C: Nuclear Processes
Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Section 21.1: Nuclear reactions affect the nucleus of an atom.
Section 21.4: Nuclear Fission and Nuclear Fusion


Evaluate student comprehension and mastery of nuclear reactions, radiation and radioactive particles.  


nucleon, nuclide, mass defect, binding energy, shell model, magic number, nuclear reaction, transmutation 

radioactive decay, nuclear radiation, radioactive nuclide, alpha particle, beta particle, positron, electron capture, gamma ray, half-life, decay series, parent nuclide, daughter nuclide, artificial transmutation, transuranium element.  

roentgen, rem, film badge, Geiger-Muller counter, scintillation counter, radioactive dating, radioactive tracer, nuclear waste 

nuclear fission, chain reaction, critical mass, nuclear reactor, nuclear power plant, shielding, control rod, fuel rod, moderator, nuclear fusion 


S will work independently to complete the summative assessment of Chapter 21. Mastery of vocabulary and the relationships between radioactive products and the parent nuclei will be measured.


T will copy the two version of the Chapter 21 Test, the two versions of the answer document and blank periodic tables. T could do a last minute review of resources and even allow access to notebook resources for a period of time during the last few minutes of class.  


The two versions of the test will be copied for classes and an answer document for the multiple choice portion and the free-response portion. Students will need a periodic table and access to calculators.  


Chapter 21 Test will come in two versions and two parts. This summative evaluation will gauge student master of vocabulary, the process of nuclear decay, its measure and resulting emitted radiation.


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Last modified: 08/13/19