Answer (using elimination)
Today we reviewed our homework and did a challenging systems of equations atomic mass problem (see the bottom of the post). Then, we did a lab on where the atomic mass of the element 'snackium' was calculated. Some class periods began talking about electrons.
Homework:
1) Complete the video guide (found at the top of the video pages) while watching the electron videos (there are two links, try the first one first. If that doesn't work, try the back up.)
2) Complete the snackium lab by answering the following questions on your notebook paper
(remember to write the #, title, and paraphrase the question before you answer it)
LAB QUESTIONS
3. Interpret - Explain why the weighted average atomic mass of the element snackium is not equal to the mass of any of the pieces.
4. Peer Review - Gather the average atomic mass data from other lab groups. Explain any differences between your data and the data obtained by other groups.
5. Apply - Why are the atomic masses on the periodic table not expressed as whole numbers like the mass number of a single atom often is?
6. Research online - List the known stable isotopes for hydrogen, carbon, and mercury. Reference the websites you use. Stable refers to an isotope that is not radioactive.
7. Error Analysis - What sources of error could have led the lab groups to different final values? What modifications could you make in this investigation to reduce the incidence of error.
Homework:
1) Complete the video guide (found at the top of the video pages) while watching the electron videos (there are two links, try the first one first. If that doesn't work, try the back up.)
2) Complete the snackium lab by answering the following questions on your notebook paper
(remember to write the #, title, and paraphrase the question before you answer it)
LAB QUESTIONS
3. Interpret - Explain why the weighted average atomic mass of the element snackium is not equal to the mass of any of the pieces.
4. Peer Review - Gather the average atomic mass data from other lab groups. Explain any differences between your data and the data obtained by other groups.
5. Apply - Why are the atomic masses on the periodic table not expressed as whole numbers like the mass number of a single atom often is?
6. Research online - List the known stable isotopes for hydrogen, carbon, and mercury. Reference the websites you use. Stable refers to an isotope that is not radioactive.
7. Error Analysis - What sources of error could have led the lab groups to different final values? What modifications could you make in this investigation to reduce the incidence of error.