Conservation of Mass Lab
Conservation of Mass Lab
Purpose: To demonstrate conservation of mass by reacting vinegar
and baking soda.
Purpose: To demonstrate conservation of mass by reacting vinegar
and baking soda.
Procedure:
Procedure:
1. Wear safety goggles. Grab a tray with supplies. Retrieve one
triple beam balance. Check to see that the triple beam
balance is calibrated (needle should point to zero).
2. Have one group member pipette 20 mL of vinegar using a
graduated cylinder from the back table. Pour the vinegar
into the Erlenmeyer flask.
3. Using the scoopula, place two scoops of baking soda into
the balloon.
4. WITHOUT dropping the baking soda into the Erlenmeyer
flask, stretch the opening of the balloon around the opening
of the Erlenmeyer flask so that the balloon is attached to the
Erlenmeyer flask. The end of the balloon should hang down
on the side of the flask.
5. Draw your experiment setup on page 100. Label all lab
equipment as well as where the vinegar and baking soda
are in your setup.
6. Place the experiment setup on the triple beam balance.
Record the mass on page 100 and call this "mass of
experiment before reaction."
7. Remove the setup from the triple beam balance. Lift the
end of the balloon directly up so that the baking soda will
fall into the vinegar in the flask. Draw the reaction in your
notebook on page 100. Record qualitative observations.
8. Place the experiment setup on the triple beam balance
again. Record the mass on page 100 and call this "mass of
experiment after reaction.”
9. Wash and clean all materials (except balloon). Dry with
paper towels and return all equipment to the back lab table.
1. Wear safety goggles. Grab a tray with supplies. Retrieve one
triple beam balance. Check to see that the triple beam
balance is calibrated (needle should point to zero).
2. Have one group member pipette 20 mL of vinegar using a
graduated cylinder from the back table. Pour the vinegar
into the Erlenmeyer flask.
3. Using the scoopula, place two scoops of baking soda into
the balloon.
4. WITHOUT dropping the baking soda into the Erlenmeyer
flask, stretch the opening of the balloon around the opening
of the Erlenmeyer flask so that the balloon is attached to the
Erlenmeyer flask. The end of the balloon should hang down
on the side of the flask.
5. Draw your experiment setup on page 100. Label all lab
equipment as well as where the vinegar and baking soda
are in your setup.
6. Place the experiment setup on the triple beam balance.
Record the mass on page 100 and call this "mass of
experiment before reaction."
7. Remove the setup from the triple beam balance. Lift the
end of the balloon directly up so that the baking soda will
fall into the vinegar in the flask. Draw the reaction in your
notebook on page 100. Record qualitative observations.
8. Place the experiment setup on the triple beam balance
again. Record the mass on page 100 and call this "mass of
experiment after reaction.”
9. Wash and clean all materials (except balloon). Dry with
paper towels and return all equipment to the back lab table.