Tuesday, March 2, 2010

Class- Tuesday,March 03/02/10

Review: Chemical reactions and Isotopes

Today student learned about the
  • difference between the chemical and nuclear reaction.
  • Activity: Students made a model of the Beryllium atom having 4 protons(red pom-pom balls) and 4 neutrons(green pom-pom balls).They showed the decay of the Be-atom by losing a particle thas has 2-protons and two neutrons.So they removed 2 red and 2 green pom-pom balls from the atom.Their nuclear models was representing new element.Which is contradictory to chemical reactions.(Visual, Logical)  
Homework: Q1-4 Page number-198 from text book

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