Chemistry Honors – Class 41 & Class 42
The Gooch!
Dates
- Period A: Friday, April 4th / Monday April 7th
- Period C: Friday, April 4th / Monday April 7th
- Period D: Friday, April 4th / Tuesday, April 8th
Lab – Analysis of an Alloy
- Day 1 – Precipitation
- Collect Textbook HW
- THEORY – Gotta know how to predict the amount of NaCl needed
- SAFETY – Neutralize acid spills with NaHCO3
- SAFETY – Conduct reaction in the hood
- SAFETY – Always transfer materials to your lab table
- At the end of period you will leave labeled beaker covered in hood
- Day 2 – Filtration & Mass
- Complete filtration during class
- Leave crucible to dry in the oven
- NOTE – you must obtain final mass before next class meeting (after school? OH?)
Homework
- Make sure all of your pre-lab and prep are done properly
- All calculations due in LNB by the start of class 43 (Tue-Wed)
- NOTE – known value = 90.0% Silver in alloy (use this for percent error calculation)
- NOTE – copying answers to pre-lab questions from the Internet is not cool and leads to lab quizzes during class
- NOTE – sending information to classmates regarding the answers to lab questions is considered plagiarism
Lab Quiz
- Period A – Thursday
- Periods C, D – Wednesday
- Covered topics = lab reactions, lab calculations, lab theory, lab observations, lab procedure
- NOTE – make sure you know the correct theory and reactions
