Nancyvarkey: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- |00:01 | Welcome to this tutorial on '''Build an Atom simulation'''. |- |00:06 |In this tutorial, we will demonstrate '''Build..."

2022-08-10T13:27:05Z

Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- |00:01 | Welcome to this tutorial on '''Build an Atom simulation'''. |- |00:06 |In this tutorial, we will demonstrate '''Build..."

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{|border=1
||'''Time'''
||'''Narration'''

|-
|00:01
| Welcome to this tutorial on '''Build an Atom simulation'''.

|-
|00:06
|In this tutorial, we will
demonstrate '''Build an Atom''', Interactive '''PhET simulation'''.

|-
|00:14
| To follow this tutorial, learners should be familiar with topics in high school science.

|-
|00:21
| Here I am using-

Ubuntu Linux OS version 14.04

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|00:28
| Java version 1.7.0

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|00:33
| Firefox Web Browser Version 53.02.2

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|00:39
| Using this simulation, students will be able to: Build an atom using protons, neutrons and electrons.

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|00:49
| Identify an element and its position on the periodic table.

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|00:55
| Determine whether an atom is neutral or an ion.

Predict the charge.

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|01:03
| Determine the mass of an atom or ion.

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|01:07
| Determine the stability of atom or ion created.

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|01:12
| Represent the atomic symbols.

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|01:15
| Create isotopes of an element.

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|01:19
| Atoms are fundamental building blocks of matter.

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|01:23
|Each atom consists of a small, dense, positively-charged nucleus.

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|01:30
|Nucleus is surrounded by much lighter, negatively-charged electrons.

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|01:37
|Nucleus may also contain neutrons.

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|01:41
| Neutron has same mass as proton but it has no charge.

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|01:47
| Number of protons in the nucleus of an atom defines the chemical element.

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|01:53
| Chemical properties of an element arise due to number & arrangement of electrons.

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|02:00
| Let us get started.

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|02:03
| Use the given link to download the simulation.

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|02:07
| I have already downloaded '''Build an Atom''' simulation to my '''Downloads''' folder.

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|02:15
| To open the simulation, right click on '''build-an-atom html''' file.

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|02:21
| Select '''Open With Firefox Web Browser''' option. File opens in the browser.

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|02:29
| This is the interface of '''Build-an-Atom''' simulation.

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|02:34
| The interface has 3 screens-

'''Atom''', '''Symbol''' and '''Game'''.

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|02:42
|Let us begin our simulation with '''Atom''' screen.

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|02:46
| Click on '''Atom''' screen.

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|02:49
|Using this screen, students can- build atoms, determine the identity, net-charge and mass of an atom.

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|03:00
|'''Atom''' screen shows a '''Bohr's''' model of an atom.

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|03:05
|It shows position of nucleus and 2 orbits.

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|03:10
|At the bottom of the screen, there are 3 containers with '''Protons''', '''Neutrons''' and '''Electrons'''.

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|03:18
| On the right-side, there are 3 panels- '''Element''', '''Net charge''' and '''Mass Number'''.

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|03:27
|To open the panel, click on the green plus sign located on top-right corner on each panel.

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|03:35
|This allows you to view the changes as you change the number of particles.

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|03:41
|At the bottom of the screen, you will see '''Show''' box.

In the box, click on '''Stable/Unstable''' check box.

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|03:52
|The top left corner of the screen shows a box.

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|03:56
|It shows the number of '''Protons''', '''Neutrons''' and '''Electrons''', we have used to create the atom.

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|04:05
| Let us start by building '''Hydrogen''' atom.

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|04:09
| From the '''Proton''' container, click on the '''Proton'''.

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|04:14
|Drag and drop on the '''X''' mark, which represents the nucleus of an atom.

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|04:20
|Simultaneously observe the changes in each of the panels.

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|04:27
| Hydrogen atom is the simplest of all elements.

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|04:32
| It has one electron in the first orbit and one proton in the nucleus.

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|04:39
| Drag an '''Electron''' and place in the first orbit.

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|04:44
| By default, the orbits are shown as circular dashed lines.

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|04:50
|Under '''Model''' heading, click on '''Cloud''' radio button.

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|04:55
| This will show the orbit as electron cloud.

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|04:59
|Click on '''Orbits''' radio button to show the default orbits.

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|05:05
| Observe all the '''panels''' on the '''screen'''.

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|05:09
|'''Element''' box shows '''Hydrogen''' as '''Element'''.

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|05:13
|'''Net charge''' is zero and is labeled as neutral atom.

'''Mass number''' is one.

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|05:22
|It also shows that the atom is '''Stable'''.

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|05:26
| Now add one more '''Proton''' to the nucleus. The atom is shown as '''Unstable Helium Ion'''.

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|05:35
|Add one more '''Electron''' in the 1st orbit.

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|05:40
|Now it is a '''Neutral''' atom but the atom is still labelled as '''Unstable'''.

|-
|05:47
|Add a '''Neutron''' to the nucleus. The atom is now '''Stable'''.

|-
|05:53
|The '''Mass Number''' shows 3, but we know that atomic mass of helium is 4. So, add another '''Neutron''' to the nucleus.

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|06:04
|This completes the atomic structure of '''Helium''' atom.

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|06:09
|Helium atom has 2 Protons, 2 Neutrons and 2 Electrons.

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|06:16
| We can add '''Neutrons''' to the nucleus, to create isotopes of the same element.

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|06:23
|Atoms of the same element that differ in neutrons are called isotopes.

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|06:29
|Isotopes of same element have same chemical properties.

|-
|06:35
| Remove one '''Proton''', one '''Electron''' and 2 '''Neutrons''' from the '''Helium''' atom.

|-
|06:43
| Now we have hydrogen atom, also called '''Protium'''.

|-
|06:49
| Let us create '''isotopes''' of '''Hydrogen'''.

|-
|06:53
| '''Hydrogen''' has three isotopes. '''Protium''', '''Deuterium''' and '''Tritium'''.

|-
|07:00
|Nucleus of '''Protium''' contains only one '''Proton'''.

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|07:04
|'''Deuterium''' has one '''Proton''' and one '''Neutron'''.

|-
|07:09
| '''Tritium''' has one '''Proton''' and 2 '''Neutrons'''.

|-
|07:15
| Add one '''Neutron''' to the nucleus. '''Deuterium''' atom is created.

|-
|07:22
|It is '''Stable'''. Add another '''Neutron''' to the nucleus to create '''tritium'''.

|-
|07:29
| '''Tritium''' is unstable, as shown here.

|-
|07:34
| As an assignment: Create a neutral carbon atom. Show isotopes of carbon.

|-
|07:43
|Click on '''reset''' button at the bottom-right corner.

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|07:48
| This will reset the screen to default settings.

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|07:53
| Next, click on '''Symbol''' screen at the bottom of the interface.

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|07:59
| Using this screen, students can interpret atomic symbols.

|-
|08:05
| Notice that a '''Symbol''' panel is added on the screen.

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|08:10
|Atom of every element is represented by a '''symbol'''.

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|08:15
| It gives information about atomic number, mass number and charge.

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|08:23
|The subscript number is called the atomic number.

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|08:27
| The superscript number is called the '''mass number'''.

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|08:32
| Charge on the atom is shown on the top-right corner.

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|08:37
| The number of protons in an atom is its atomic number.

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|08:42
|The total number of protons and neutrons in an atom is its mass number.

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|08:49
| Add '''Protons''', '''Neutrons''' and '''Electrons''' to the atom.

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|08:55
|Observe the '''Symbol''' panel.

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|08:58
|Note the change in name of '''Element''', atomic number, '''Mass Number''' and charge.

|-
|09:06
| Now we will move on to the '''Game''' screen.

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|09:10
|Click on '''Game''' screen at the bottom of the interface.

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|09:15
| Four different games are available.

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|09:18
|These games will test the knowledge gained using this simulation.

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|09:24
| A timer and a sound button are provided at the bottom-left corner of the screen.

|-
|09:31
| Click on the timer button to enable the timer before the game starts.

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|09:37
|We can also control the sound by clicking on the sound symbol.

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|09:42
| Click on each game screen and explore.

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|09:50
| In this tutorial, we have learnt: how to use '''Build an Atom''', interactive PhET simulation.

|-
|09:59
| Using this simulation, we have learnt to - Build models of Hydrogen and Helium atoms.

|-
|10:07
| Add or remove electrons to create ions.

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| 10:11
| Add or remove neutrons to create isotopes.

|-
|10:16
| As an assignment: create a neutral oxygen atom.

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|10:21
|Add two electrons to the neutral atom.

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|10:25
| Observe the change in parameters on various panels.

|-
|10:30
| Try to remove electrons from the inner shells, observe the results.

|-
|10:37
| The video at the following link summarizes the '''Spoken Tutorial''' project. Please download and watch it.

|-
|10:46
| The '''Spoken Tutorial Project '''team: conducts workshops using spoken tutorials and gives certificates on passing online tests.

For more details, please write to us.

|-
|11:00
| Please post your timed queries on this forum.

|-
|11:04
| This project is partially funded by Pandit Madan Mohan Malaviya National Mission on Teachers and Teaching.

|-
|11:12
| Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India. More information on this mission is available at this link.

|-
|11:24
| This tutorial is contributed by Snehalatha kaliappan and Meenal Ghoderao, from IIT Bombay. Thank you for joining.

|-
|}

PhET-Simulations-for-Chemistry/C2/Build-an-Atom/English-timed - Revision history

Nancyvarkey: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- |00:01 | Welcome to this tutorial on '''Build an Atom simulation'''. |- |00:06 |In this tutorial, we will demonstrate '''Build..."