Atom - Revision history

Jmdonev: 1 revision imported

2021-09-27T00:02:46Z

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energy>Ethan.boechler at 18:08, 10 September 2021

2021-09-10T18:08:31Z

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	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2018~~-06-01]]		[[Category:Done 2021-01-31]]
			[[Category:Translated to Spanish]]
			[[es:Átomo]]
			[[Category:Translated to French]]
			[[fr:Atome]]
	[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]		[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]
	<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.		<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.
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	====[[Proton]]s====		====[[Proton]]s====
	[[File:Atom size.jpg\|framed\|right\|Figure 3. ~~A look at what composes an atom (not to~~ scale). This is an atom of helium - notice how it has two protons.<ref>"Nature of the Universe: Chapter Eleven" internet:http://www.lcsd.gov.hk/CE/Museum/Space/EducationResource/Universe/framed_e/lecture/ch11/ch11.html</ref>]]		[[File:Atom size.jpg\|framed\|right\|Figure 3. Atoms have protons and neutrons in their nuclei with electrons orbiting outside. Note the diameters in the picture give the scale. This is an atom of helium - notice how it has two protons.<ref>"Nature of the Universe: Chapter Eleven" internet:http://www.lcsd.gov.hk/CE/Museum/Space/EducationResource/Universe/framed_e/lecture/ch11/ch11.html</ref>]]
	An element is identifiable by the number of protons found within a nucleus of one of its atoms (see figure 3); furthermore, the number of protons in the atom also determines the element's location on the [[periodic table of elements]]. For example, a [[carbon]] atom has exactly 6 protons in its nucleus and is thus number 6 on the [[periodic table of elements]], [[thorium]] has exactly 90 protons and is thus number 90 on the periodic table of elements.		An element is identifiable by the number of protons found within a nucleus of one of its atoms (see figure 3); furthermore, the number of protons in the atom also determines the element's location on the [[periodic table of elements]]. For example, a [[carbon]] atom has exactly 6 protons in its nucleus and is thus number 6 on the [[periodic table of elements]], [[thorium]] has exactly 90 protons and is thus number 90 on the periodic table of elements.

Jmdonev at 05:33, 14 October 2019

2019-10-14T05:33:38Z

← Older revision		Revision as of 05:33, 14 October 2019
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	====[[Neutron]]s====		====[[Neutron]]s====
	[[Neutron]]s have the same [[mass]] as protons, making it very easy to determine how many are within a nucleus of an atom. Simply subtracting the number of protons from the [[atomic mass]] of the atom will give the number of neutrons. For example, [[cesium]] is number 55 on the [[periodic table of elements]] and thus has 55 protons; furthermore, its atomic mass (typically also found on the periodic table) is known to be 133 [[amu]] (atomic mass units). Subtracting 55 from 133 gives 78, which is thus the number of neutrons within the atom. The same type of atom (determined by number of protons) can have different numbers of neutrons. These are referred to as different [[isotope]]s of an atom. For example carbon-12 (<sup>12</sup>C) is one isotope of carbon and carbon-14 (<sup>14</sup>C) is another isotope of carbon. This is discussed more on the page about the [[nucleus]].		[[Neutron]]s have the same [[mass]] as protons, making it very easy to determine how many are within a nucleus of an atom. Simply subtracting the number of protons from the [[atomic mass]] of the atom will give the number of neutrons. For example, [[cesium]] is number 55 on the [[periodic table of elements]] and thus has 55 protons; furthermore, its atomic mass (typically also found on the periodic table) is known to be 133 [[amu]] (atomic mass units). Subtracting 55 from 133 gives 78, which is thus the number of neutrons within the atom. The same type of atom (determined by number of protons) can have different numbers of neutrons. These are referred to as different [[isotope]]s of an atom. For example carbon-12 (<sup>12</sup>C) is one isotope of carbon and carbon-14 (<sup>14</sup>C) is another isotope of carbon. This is discussed more on the page about the [[nucleus]].

			==Knowing Nuclear==
			Our team has created a video in the Knowing Nuclear stream about this:

			<html><iframe width="800" height="600" src="https://www.youtube.com/embed/4xaHf_ZQEOw" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html>

	==Phet: Build an Atom==		==Phet: Build an Atom==
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	<html><iframe src="https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>		<html><iframe src="https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>

	~~==Knowing Nuclear==~~
	~~Our team has created a video in the Knowing Nuclear stream about this:~~

	<html><iframe width="560" height="315" src="https://www.youtube.com/embed/4xaHf_ZQEOw" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html>

	For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].		For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].

Jmdonev at 05:32, 14 October 2019

2019-10-14T05:32:24Z

← Older revision		Revision as of 05:32, 14 October 2019
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	<html><iframe src="https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>		<html><iframe src="https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>

			==Knowing Nuclear==
			Our team has created a video in the Knowing Nuclear stream about this:

			<html><iframe width="560" height="315" src="https://www.youtube.com/embed/4xaHf_ZQEOw" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html>

	For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].		For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].

Jmdonev at 05:15, 27 June 2018

2018-06-27T05:15:50Z

← Older revision		Revision as of 05:15, 27 June 2018
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	Below is a interactive PhET simulation from the University of Colorado. This simulation creates an atom from protons, neutrons, and electrons and test skills with the periodic table.		Below is a interactive PhET simulation from the University of Colorado. This simulation creates an atom from protons, neutrons, and electrons and test skills with the periodic table.

	<html><iframe src="~~http~~://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>		<html><iframe src="https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html" width="800" height="600"></iframe></html>

	For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].		For more information about atoms, please see UC Davis's [http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Atom chem wiki].

Jmdonev: 1 revision imported: Doing upload, largely of old redirects.

2018-06-04T16:52:26Z

1 revision imported: Doing upload, largely of old redirects.

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Jmdonev at 20:28, 1 June 2018

2018-06-01T20:28:37Z

← Older revision		Revision as of 20:28, 1 June 2018
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	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2017~~-07-01]]		[[Category:Done 2018-06-01]]
	[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]		[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]
	<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.		<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.

Jmdonev: 1 revision imported

2017-08-29T01:46:45Z

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Jmdonev at 20:25, 14 July 2017

2017-07-14T20:25:54Z

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	~~[[Category:Done 2015-09-06]]~~
	[[Category:Phets]]		[[Category:Phets]]
	[[Category:~~Needs citations~~]]		[[Category:Done 2017-07-01]]
	[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]		[[File:si_7x7.jpg\|framed\|thumb\|right\|x200px\|Figure 1. Scanning tunneling microscope<ref>For an explanation of these amazing microscopes please see [http://hyperphysics.phy-astr.gsu.edu/hbase/solids/piezo.html#c2 hyperphysics]</ref> image of a specially prepared surface of [[silicon]]. Each orange circle is an individual atom.<ref>Downloaded from http://phys.org/news70293607.html</ref>]]
	<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.		<onlyinclude>An '''atom''' is the most basic unit of an '''element''' - all elements have [[periodic table of elements\|distinct properties]] because of the structure of their atoms. For example, an atom on the surface of a silicon crystal (see Figure 1) will be different from those on the surface of a [[uranium]] crystal.</onlyinclude> The word 'atom' comes from the Greek roots 'a' (without) and 'tom' (to cut).<ref>The Compact Oxford English dictionary pg 84, Oxford University Press, 2004.</ref> Up until the 20th century, atoms were believed to be the smallest possible particle.

J.williams: 1 revision imported

2015-09-18T16:51:26Z

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