Lesson 12 from the textbook was introduced with a brief review of atomic number and atomic mass.  Key learnings:

• Atomic number = # of protons in one atom of a given element
• Protons have a positive charge
• Electrons have a negative charge
• Neutral atoms have equal numbers of protons and electrons
• Atomic mass = (# of protons) + (# of neutrons) in one atom of a given element
• Neutrons have no charge

Students then worked in pairs to complete the Lesson 12 Worksheet.  For homework, students were assigned Lesson 12 textbook questions 1-7 (page 60).

All students also received a copy of their progress report.  Students should make every effort to catch up on missing work this weekend and take notes on chapters 1-3 in preparation for the quiz on Tuesday.