Hands- On Activities
Objectives: In this activity my students were able to examine the bonding between molecules. As well they were able to
use science language to demonstrate their knowledge about the experiment through analogies, and outline information
for sharing with students. They were also able to use imaginative thought and evaluate processes within meaningful
contexts of chemistry.
Notes: This activity was completed on my last full day of instruction with these students, because of this I did not assign
a report for these students. If I did have the time to assign a report to this class, I would have asked them to create a
poster which included the procedure they followed as well as the materials and the results of the experiment. I would
have asked them to include pictures from the lab. Finally I would like them to share their results and experimental
procedure with the class to demonstrate that there is more than one way to come up with the same result.
An ionic compound that has at least one water
molecule attached to it to make it more stable for
shipping and storage.
How could we remove the water from this molecule?
Once the water has been removed the compound will
now be called anhydrous.
Example:
Calcium Chloride Dihydrate turns into Calcium
Chloride Anhydrous.
Naming Hydrates
mono - 1
di - 2
tri - 3
tetra - 4
penta - 5
hexa - 6
hepta - 7
octa - 8
nona - 9
deca – 10
Let’s answer these together to get our next clue!
Copper (II) Sulfate Pentahydrate
Cobalt (II) Chloride Dihydrate
K2SO4∙5H2O
Cd(NO3)2∙10H2O
OREO Cookie
Everyone knows that they best way to eat an
OREO is to eat the inside first!
In this detour you must figure out what
percentage of the OREO cookie is the filling in
order to get your next clue.
Data
Mass of OREO (g)
Mass of Cookies (g)
Mass of Filling (g)
Percent Filling (%)
Each group member may have one OREO cookie,
but only one needs to be used for the detour.
Dehydrating Hydrates
In this detour, you and your teammates will
create an investigation plan about how to remove
the water from your compound and calculate the
%H2O in the compound. The tools that you will be
able to use to perform the dehydration are:
Hot Plate
Stirring Rod
Filter Paper
Scale
Once you have filled out your investigation plan
bring it to me, if correct you will receive your
next clue.
On a piece of loose leaf each team member must:
Give the molecular formula for each of the following:
1) Zinc sulphate heptahydrate
2) Copper(I) sulphite monohydrate
3) Cobalt(II) fluoride tetrahydrate
4) Lithium nitrate trihydrate
5) Sodium sulphate decahydrate
6) Calcium nitrate trihydrate
7) Calcium sulphate hexahydrate
8) Sodium phosphate tetrahydrate
9) Aluminum hypochlorite octahydrate
10) Cesium carbonite dehydrate
Give the name of the following:
1) Na2SO4 ∙ 10H2O
2) LiNO3 ∙ 3H2O
3) CU2SO3 ∙ 3H2O
4) Ca(NO3)2 ∙ 2H2O
5) NaClO4 ∙ H2O
6) MgSO4 ∙ 7H2O
7) Cs2CO2 ∙ 2H2O
8) ZnSO4 ∙ 7H2O
9) Na3PO3 ∙ 4H2O
10) Ni(NO3)2 ∙ 6H2O
For this road block you can carry out your
investigation plan. Be sure to include observations,
data tables and any other information that you may
need. Once you have completed your task, proceed to
the pit stop with all your written information. If not
all data is complete a penalty of 3 minutes will be
enforced.
What do you notice about the percent water in each
compound?
What does this mean?
When you heat a
the
is
The substance you have created is called
an
. The compound
contained
% H2O and the compound
contained
%H2O.
hydrate, anhydrate, Calcium Chloride Dihydrate,
water, evaporate, Strontium Chloride Hexahydrate
WARNING:
Last team to arrive may be
eliminated.