Catalyst – September 2(7), 2010 1. What is the atomic number of silicon (Si)? 2. How many protons, neutrons, and electrons does sodium (Na) have? 3. Who.
Chemical Combination Unit -1 Lesson -1 Made By Dr. Niveen Fawzy.
Catalyst – February 13, 2012 Monday Mystery Element! 1. Easily magnetized 2. Important for human nutrition by preventing anemia 3. Can become radioactive.
