Problem:
What
is the impact of different amounts of water inside a can do to the crushing
ability?
Hypothesis:
I
believe that the amount of liquid inside the can will affect the crushing
ability. My thoughts on my reasoning are; If the liquid inside the can increases
the pressure and the volume it will make the cans ability to crushed a little harder.
I think the less liquid you have in a can the more the can will be crushed. I
believe this because if you have a can filled with little liquid the little
amount of liquid is going heat up faster creating that gas in less time. Then
when you put the can in cold water there is less hot boiling liquid for it to
change degrees and so it has the most crushing ability.
Experimental
Design:
Materials
1.
Bunsen
Burner
2.
Goggles
3.
Measuring
Tube
4.
Metal
Pliers
5.
20
Cans (For Multiple Mistakes and Trials)
6.
Bucket
(Filled with Cold Water)
7.
An
available Sink
Variables:
CV:
Temperature of the Water inside the can, Size of the Can, Time over the Bunsen burner
after you've seen the vapor, The Temperature of the water inside the bucket
that you dump the can into
IV:
The amount of water inside the can
DV:
The volume of the can (Crushed)
Procedure:
In
order to properly test my hypothesis, I gathered all of the needed equipment
and headed to the Academy Counter Space. First you need to put on your safety
goggles, and set up all your materials including your 20 cans, bowl, Bunsen
Burner, measuring tube, and pliers. Then you will need to fill the bowl with cold
water. After a teacher has connected the Bunsen Burner to the Gas Plug, you are
almost ready. Grab the measuring tube and filled it up with 5 milliliters of
water(starting water amount) then you will need to grab one of your cans and
fill it with the water inside your measuring tube. Next ignite your Bunsen
burner grab your pliers and your can. Take your pliers and pick up the can. Now
your experiment starts. Hold the can over the flam of the Bunsen Burner so that
just the tip of the flame is touching your can. Wait a few minutes until you
see water vapor spouting from the top of the can once you see this it is very
important that you admittedly count to ten. Once you hit the number 10 you will
then tip your can into the bowl of cold water. This part of the experiment
needs to be consistent. When you tip your can into the bowl it will need to go
straight into the water inside the bowl. After you tip your can into the bowl
of water it will be crushed. The volume of your can after its been crushed will
depend on the amount of water inside your can at the start of the experiment.
You will need to have multiple trials for your experiment. Each water amount
(5,15,30,45, and 100 milliliters) will need to have 3 trails. When you have all
your data needed after all of the trails have been completed you should record
all your data and observations.
Conclusion
and Analysis:
I wanted to test whether or not the amount of
liquid inside a can would affect the crushing ability. In my hypothesis I
stated that the can would be affected, and with less water inside the can the
more crushing ability it would have. With my results my hypothesis was
supported. The cans that were filled with 5 milliliters of water held 77
milliliters of water after the experiment ( the cans usually hold 350
milliliters). As the amount of water
inside that can increased the water it held after the experiment would also
increase meaning it had less of a damaging crush.
After further research, I
figured out the true reason why the can crushes more with less water. It deals
with Charles and Boyles Law. When you hold your can over the Bunsen Burner it
starts to steam, creating water vapor. When this happens your molecules inside
your liquid are spreading apart (Into a Gas). When you tip your can into the
cold water the molecules instantly become closer together like a liquid,
bringing the can with it. The reason smaller amounts of water create a more
damaging crush is because the water has more space in the can for the molecules
to spread out when it turns in to a gas.
