(pretty much what happened was when the can was heated and put
into cold water, it crushed itself. Just need some logical answers
explaining Boyles Law, and the chemistry behind the experiment)
- Help With Lab Questions Please Pretty Much What Happened Was When The Can Was Heated And Put Into Cold Water It Crus 1 (125.7 KiB) Viewed 28 times
INSTRUCTIONS
As you will learn in this unit, gases are affected by many
variables including; pressure, temperature, and volume. There have
been many scientists who have worked with and experimented with
gases and the above mentioned variables to see how they would
respond. As a result numerous laws have been developed over the
years. In this experiment we will be taking a closer look at these
Gas Laws.
Materials:
Two (2) Used pop cans
Heating source (Hot Plate, Stove Bunsen burner, or something
similar)
Large Beaker, transparent bucket, or your kitchen sink
Cold Water – the colder the better!
A dozen (12) Ice Cubes
Tongs
Cautions:
Make sure you wait until you observe plenty of steam being emitted
from the pop can before you proceed to immerse it in water.
Pop can will be quite warm, so be careful to avoid contact with any
exposed skin.
Be sure workspace is clear of clutter and that there are no pets or
small children playing around your feet. Just in case you lose your
grip on the can or trip and the hot can drops.
Procedure:
Be sure that both pop cans have been cleaned thoroughly and are dry
before proceeding with the experiment.
Put 10 ml of water into the first pop can.
Place the pop can on the hot plate and begin heating it.
Meanwhile, set up a large beaker, bucket or sink with cold water.
The beaker should be almost full with the water.
Place ½ dozen (6) ice cubes into the container with the
water.
Wait until the pop can emits steam for a few minutes.
Grab the pop can with a set of tongs.
Quickly invert the pop can above the water and lower it into the
water. You need to do this quickly to make a good seal with the
water.
Make observations on the events during the time the can was in the
water, as well as after it was removed. Record your observations in
the data section. Be sure to make note of the amount of water that
drained from the can once removed.
Repeat steps 2-9 for the second pop can.
Data:
List/Present your observations in a table.
Include amount of water before and after.
Include before and after pictures.
You are required to submit a full lab report for this
experiment; Purpose, Hypothesis, Materials, Procedure, Data, and
Discussion. Be sure to incorporate the following discussion
questions into your writing. For details on proper lab formatting
and what to include in each section please reference the document
“Lab Format” under Resources.
Questions to include in Discussion:
(NOTE: These should be worked into the body of your Discussion, as
a portion of the information the Discussion should include. This is
NOT the whole Discussion. Please refer to the Lab Format
Information Sheet and the Lab Report Example for proper section
format. The Rubric included in the Assignment Folder will also help
you with the formal lab write-up. )
Why was it necessary to heat the water inside the pop can?
Identify which gas law is being examined in this experiment. Using
your observations as examples detail and explain this gas
law.
What could account for what happened to the pop can? Explain your
reasoning. Connect your answer to your observations as much as
possible.
When the pop can was pulled out of the water, what did you observe
with regards to its shape, and the amount of water that poured out
of the can? Give logical explanations for this observation.
Amount of water before Amount of water after Pop can 1 10ml 3/4 cup Popcan A2 110ml cup نو