CP09 – Pennium

Date

• Tuesday, January 31st

Class Business

• Video due date
• Sharing density data (see post for info)
• Turn in worksheet HW

Recap

• Review homework questions
• How do I show process?
• Do I need to write units all the time?
• Sig figs and math rules?

Quiz – Measurement, Sig Figs and Units

• two questions
• 15 minutes
• show your work

Lab Activity – Pennium

• weighted average calculation
• simulate this with pennies
• each group has a sample of 15 pennies
• determine how many isotopes
• determine the mass of each isotope
• calculate the weighted average of each sample
• share on the spreadsheet [LINK]

Lab Activity Discussion

• How does this relate to the periodic table?

Homework

• Finish lab data entry
• Ch. 5 (22, 24)