Monday, Dec. 9th: “A” Day
Tuesday, Dec. 10th: “B” Day
Agenda
Homework questions/Collect
Sec. 4.3 quiz: “Trends in the Periodic Table”
Check Flame Test lab write-ups
Flame Test lab discussion
Conduct Lab, complete analysis and conclusion
questions
Lab will be due next time!
Movie: “Hunting the
Elements”
Homework
 Sec. 4.3 review, pg. 141: #1-11
Questions?
Problems?
4.3 Quiz:
“Trends in the Periodic Table”
You may use your notes, your book, and a
periodic table to complete the quiz on your
own…
Don’t do #9 or #10
Use the
force!
Flame Test Lab Discussion
The different color flames you will see in the
“Flame Test” lab are caused by different metals
in the solutions.
Remember, most of the elements on the
periodic table are metals.
Metals are listed 1st when naming compounds.
Non-metals are found on
the right-hand side
of the table.
Flame Test Lab Discussion
Identify the metals in the solutions you will be
testing in today’s lab:
1.
2.
3.
4.
5.
6.
CuSO4
K2SO4
Li2SO4
Na2SO4
NaCl
SrCl2
Flame Test Lab Hints
To test the NaCl crystals, remove a wooden splint
from the beaker of distilled water and dip it into
the NaCl crystals so the crystals will stick to the
splint.
The cobalt glass is used to help “filter out” the
bright yellow flame caused by sodium (Na) metal.
When the bright yellow flame is filtered out, it
may be easier to see other, less bright colors in
the flame.
Hint: Neither of the 2 unknown
samples is a mixture…
Lab: “Flame Tests”
Safety Items
We will be using bunsen burners so hair must be
TIED BACK!
The lights in the lab will be turned OFF so that you
can see the flame colors more easily – be careful
and be descriptive!
 Don’t burn the wooden splint – you only want to
see the color made by the metal solution as
excited electrons fall back to lower energy states.
Put the splint into the “used splint beaker” when
you’re done with the test.
Lab: “Flame Tests”
Be a real scientist! If you’re not sure about the
unknowns, go back and test them side-by-side
with the sample that you think it might be!
In the Analysis section, question #1: Organizing
Data, just write “see data table” for your
answer.
Remember that all lab questions need to be
answered in COMPLETE SENTENCES!
Be safe and have
Completed lab will be due next time!
Movie:
“Hunting the Elements”
You do not have to take notes on the movie,
but I do expect you to stay awake and pay
attention…