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Topic: Bubbles in boiling water?  (Read 4004 times)

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Offline Tr7733

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Bubbles in boiling water?
« on: March 07, 2016, 03:08:39 AM »
Hi everyone,
I don't study chemical science, however in my primary teaching degree that i am currently completing, i need to take science units. As part of one assignment i need to answer four science questions related to biological science, chemical science, earth and space science and physical science. The only problem is the science questions are incorrect and i need to explain what is incorrect about the science question by describing the acceptable science understanding...if that makes sense? I have managed to complete majority of the science questions except for the chemical science question. I cannot wrap my head around it nor find the correct information on it. Its hard to research information when i don't exactly know what is wrong with the question.I will post the question bellow. If any one is able to help me out and link me to any great written work, explain it to me on here or even suggest a great video you know of. I would be for ever great full as i feel like i am slowly going insane from research that is leading no where.
Chemical science question/incorrect statement : "Bubbles in boiling water are made up of heat and air"

Offline ATMyller

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Re: Bubbles in boiling water?
« Reply #1 on: March 07, 2016, 03:51:47 AM »
I think the statement is poorly constructed, because is it both correct and incorrect at the same time.

Gases absorbed in water are released as bubbles when boiled, but primarily they are composed of gaseous water.
Bubbles are not made up of heat, but heat causes the phase change of water in to gaseous state.
Then again you can boil water without heating it, by decreasing pressure.
Chemists do it periodically on table.

Offline Tr7733

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Re: Bubbles in boiling water?
« Reply #2 on: March 07, 2016, 05:06:58 AM »
I think the statement is poorly constructed, because is it both correct and incorrect at the same time.

Gases absorbed in water are released as bubbles when boiled, but primarily they are composed of gaseous water.
Bubbles are not made up of heat, but heat causes the phase change of water in to gaseous state.
Then again you can boil water without heating it, by decreasing pressure.

Thank you so so much for your h elp :) I really appreciate it. I agree the questions are poorly constructed but i think they did this on purpose because its supposed to be sort of correct but not completely correct, which makes it super confusing for people who do not know a lot about the subject. Do you know what overall umbrella this information would fall under or key words i would use to help me find scientific journal articles on this matter so i can continue researching?

Offline Arkcon

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Re: Bubbles in boiling water?
« Reply #3 on: March 07, 2016, 08:22:52 AM »
Do you know what overall umbrella this information would fall under or key words i would use to help me find scientific journal articles on this matter so i can continue researching?

Now this might be your problem.  Key words can be very tricky in the sciences.  You wouldn't look for "key words" in mathematics.  Now that's not the best example, but it does help you understand -- if you try to oversimplify, you end up going beyond wrong, while using "correct" words.

Furthermore, journal articles, on basic high school topics, is really barking up the wrong tree.  Who would work on such a thing, where would it be published, who would pay to have such a journal in their university library, and who would get recognition for such a publication?

The text book you're meant to teach from may have a bibliography in the teacher's edition for further reading.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline mikasaur

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Re: Bubbles in boiling water?
« Reply #4 on: March 07, 2016, 12:23:28 PM »
Furthermore, journal articles, on basic high school topics, is really barking up the wrong tree.  Who would work on such a thing, where would it be published, who would pay to have such a journal in their university library, and who would get recognition for such a publication?

Tr7733, Arkcon is right here. No one is going to write journal articles on simple concepts like these. For stuff like this, Google is your friend. Learning how to learn is of utmost importance and you can do "research" pretty easily using the internet.
Or you could, you know, Google it.

Offline Tr7733

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Re: Bubbles in boiling water?
« Reply #5 on: March 09, 2016, 09:53:26 PM »
Furthermore, journal articles, on basic high school topics, is really barking up the wrong tree.  Who would work on such a thing, where would it be published, who would pay to have such a journal in their university library, and who would get recognition for such a publication?

Tr7733, Arkcon is right here. No one is going to write journal articles on simple concepts like these. For stuff like this, Google is your friend. Learning how to learn is of utmost importance and you can do "research" pretty easily using the internet.

Thank you! I completely understand where you are both coming from. The annoying part is our lecturers will not accept information from google or websites that are not considered 'recognisable' if that makes sense. However this is where i have gained the most understanding of the topic and have found great websites on this topic. They expect us to find information written by scientist, in high school text books or journal articles and like you have pointed out no one is going to write a journal article on it alone. I managed to find a chemistry book and among everything in the book i found one paragraph which backs up my understanding and the point i want to make, which I'm hoping is good enough to make a reference to.
Again thanks everyone :)

Offline Babcock_Hall

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Re: Bubbles in boiling water?
« Reply #6 on: March 10, 2016, 12:00:54 PM »
Textbook A might cover subject 1 more clearly than Textbook B, but textbook B might cover subject 2 better than textbook A does.  That is why I keep multiple textbooks on my bookshelf, and some are quite old.  For this example I would look mainly at high school chemistry or physics textbooks.  However, the theory of boiling liquids (usually not water) is also important in organic chemistry.  Therefore, an organic chemistry laboratory manual discussing what goes on in a simple distillation might be helpful.  Finding a definition of "heat" would also help.
« Last Edit: March 10, 2016, 12:19:41 PM by Babcock_Hall »

Offline mikasaur

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Re: Bubbles in boiling water?
« Reply #7 on: March 10, 2016, 12:05:05 PM »
You will definitely find information like this in textbooks.

It's too bad they won't accept websites. I believe Wikipedia is about as accurate as Encyclopædia Britannica when it comes to scientific articles that aren't prone to intentional misinformation or "revenge" editing (the irony of pointing you to a wikipedia article is not lost on me).

My Google searches often land me to UCDavis' wiki, and in fact I found one on boiling here. They seem to be pretty accurate and reference other texts.

Of course even textbooks get it wrong too! So you have to take everything you learn with a grain of salt.
Or you could, you know, Google it.

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