SNC1D Virtual Chemistry Lab - Spring 2021
Virtual Chemistry La
CURRICULUM EXPECTATIONS
● C2 - investigate, through inquiry, the physical and chemical properties of common
elements and compounds
● C3 - demonstrate an understanding of the properties of common elements &
compounds, and of organization of elements in the periodic table
Read the instructions and follow each step to complete the Gizmos. You will need the
esults from Part A to help answer the questions in Part B.
Part A - Using the Gizmo: Chemical Changes
1. Click on the link provided above to access the Gizmo, and make sure that your screen
looks like the following:
2. Using the Gizmo, complete the following table. For each row, you will need to select the
listed reactants. Make sure that you click reset after each set of reactants.
a. Your first step is to make observations on each reactant's physical properties. Fo
some reactions, you have the option of using a thermometer, Phenol red, a nose,
a magnifying glass, or a scale.
Note:
https:
www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=1060&ClassID=3787295
● Some chemical reactions release heat. They are exothermic
causing temperature increases. Some chemical reactions abso
heat. They are endothermic causing temperature decreases.
● Two families of chemicals are acids and bases. Acids and bases
can be detected by an indicator, which is a substance that
changes color in the presence of an acid or a base. Phenol red is
an indicator that is yellow in an acid, orange in a neutral solution,
and pink in a base.
. The second step will be to press play and make observations about what
happens when the reactants are mixed together.
c. The third step is to identify whether a chemical change has occu
ed. You must
explain your choice.
Reactants Describe its
physical
properties.
Observations:
(the mixing of
eactant 1 +
eactant 2)
Did a chemical change
occur?
Explain your choice.
1 Sodium Sliver, rough Evaporated and
turned yellow
and then clear2 Water Clear,
1 Hydrogen
peroxide
Liquid Turned
own
and then back
to its original
colour. There is
more liquid
compared to
when it started.
2 Potassium iodide Yellow, liquid
1 Silver nitrate grey
lue ish,
liquid
Nothing
happens the
two object don’t
mix. One is
liquid and the
other is solid.
2 Gold Solid,
1 Calcium chloride Powder, White It was clea
then afte
mixing it turned
slightly yellow.
2 Sodium
hydroxide
Clear, Liquid
1 Ammonium
nitrate
Liquid Nothing
happened the
chemicals
mixed togethe
as one.
2 Water Liquid, I drink
think everyday
3. Click Reset. Select the Gas collection setup. Chemists use this apparatus to collect any
gases produced in the reaction. From the reaction flask, gases travel through a long tube
and into a cylinder of water. As gases bu
le into the cylinder, the water is displaced
(removed) until the cylinder is filled with gas.
One way to test what kind of gas is in the cylinder is to use a glowing splint. A glowing
splint is a wooden stick that has been lit on fire and then blown out, resulting in a
glowing, red-hot tip. The table shows how a glowing splint reacts to some common
gases:
Gas Ca
on dioxide (CO2)or ammonia (NH3)
Oxygen (O2) Hydrogen (H2)
Splint
eaction Goes out Burns
ightly
Small explosion and
“pop” sound
Using the gas collection setup, complete the following table:
Reactant 1 Reactant 2 Results from
glowing splint
Gas that is
present
Sodium Water Water gets
evaporated
Calcium chloride Sodium
ica
onate
Hydrogen
peroxide
Potassium iodide
Part B: Application - Over the summer, three containers of chemicals were left in a humid
oom. In the fall, when the science teacher returned to the classroom, the labels had fallen off of
these containers. The containers were known to contain calcium chloride, sodium, and
ammonium nitrate. How could the teacher determine the identity of each chemical?
Your response:
● will only use experimental data collected from this Gizmo - specifically the table in step 2
● should be formatted as a step-by-step guide as to how the teacher should go about
determining each chemical's identity
● include 1 chemical property and 2 physical properties that helped you to identify each
chemical