Metal Reactivity part 2- identifying the presidents Name Cong Nguyen
blk A2
Data chart: After watching the video please put your observations inside the data chart.
Here is a link to the video you should watch
https://drive.google.com/file/d/1Mfy8DBFDtTHnNF4crjjXbszoUbY20RkG/view
Objective: To identify the mystery elements based on their reactivity:
The four presidents represent the alkaline earth metals magnesium (Mg), calcium (Ca),
strontium (Sr), and barium (Ba).
Abe
George
Teddy
Tom
A
nothing
nothing
Super strong
and fast
reaction, white
fluid
Observations
B
Nothing clear
fluid
nothing
Cloudy White
mixture
White mixture,
took long
C
White bubbly
mixture
nothing
Cloudy White
mixture
Cloudy white
mixture
Post lab questions: These will be summative. Please make sure you use your data in
your answers.
1. Based on your observations which of the presidents was the most reactive? Please
make sure you support your answer with observations from your data chart.
Teddy was really reactive, Teddy reacted with all solutions a,b, and c.
In addition, the rate of reaction between Teddy and fluid A is much
faster as well.
2. Based on your observations which of the presidents was the least reactive? Please
make sure you support your answer with observations from your data chart.
George was the least reactive because it did not react with ANY
solution. There was no formation of bubbles nor cloudy white color
3. Identify the presidents from most reactive to least reactive
Teddy, Tom, Ape, and George.
4. There were four elements being tested: magnesium (Mg), calcium (Ca), strontium (Sr),
and barium (Ba).
Each president is one of the alkaline earth metals. Identify each president based on its
reactivity.
Abe:
Ca
George
Mg
Teddy
Ba
Tom
Sr
5. If we had tested some beryllium (Be) in the three solutions, (A, B, & C) what results
would you expect? Support your answers with data from your table.
We would expect Be to have no reaction whatsoever. Since they are
all in one group and the reactivity rate goes down as we go up in the
group, and Be is even above Mg in which Mg did not react, Be would
have also not reacted to the solution.
Bonus: Why did your favorite chem teachers pick these particular presidents?
I don’t know, I’m not good with presidents.