document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824268>Question 824268</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which of the following statements is true based on the propositions of the kinetic molecular theory? (1 point)\r<BR>\n" );
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document.write( "Select one:\r<BR>\n" );
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document.write( "a. Solids have definite shape and volume, and their particles are in a fixed non-vibrating position. \r<BR>\n" );
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document.write( "b. Liquids have indefinite shape and indefinite volume, so they can flow and be compressed. \r<BR>\n" );
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document.write( "c. Liquid substances have always had lower densities than solid substances. \r<BR>\n" );
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document.write( "d. Gases have low densities because of increased space between high-energy particles. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496424 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=496424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I vote for<BR>\n" );
document.write( "d. Gases have low densities because of increased space between high-energy particles.<BR>\n" );
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document.write( "As a scientist, having observed the world around me for a while, I would use my own observations first, to decide what is true, and to see if a theory agrees with all of my observation.<BR>\n" );
document.write( "Once I was satisfied that reality does not contradict the theory, I would draw conclusions based on the kinetic molecular theory for cases./situations where I do not have observational data. <BR>\n" );
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document.write( "Solids have definite shape and volume, and their particles are in a fixed in a position, but they still vibrate. That agrees with the idea that heat is kinetic energy of molecules (or ions) forming matter, and that below a certain temperature the molecules (or ions) in a substance temperatures would be rather still, making the substance have definite shape and volume, so the substance would be what we call a solid.<BR>\n" );
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document.write( "Liquids have indefinite shape, but well defined volume. They can flow, but they cannot be compressed much. It takes a lot of pressure to get a little reduction of volume. That is what I know from observation, and does not contradict the kinetic molecular theory.<BR>\n" );
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document.write( "Liquid substances do not always have lower densities than solid substances.<BR>\n" );
document.write( "Ice floats in water because water is denser than ice.<BR>\n" );
document.write( "Other solids float on water, and most would float on liquid mercury.<BR>\n" );
document.write( "That is what I know from observation, and I do not think the kinetic molecular theory would allow to draw any conclusion about the relative densities of solids and liquids.<BR>\n" );
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document.write( "\"Gases have low densities because of increased space between high-energy particles\" sounds like a statement from the kinetic molecular theory.<BR>\n" );
document.write( "It makes a lot of sense, because we know that most liquids have densities of about 1 (0.7-1.5) kg/L, while gases have densities of about 1 g/L.<BR>\n" );
document.write( "I have not measured average distances between particles in gases.<BR>\n" );
document.write( "I don't think I could do it directly, and I would probably be using the the kinetic molecular theory to design some experiment to measure them indirectly.<BR>\n" );
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