Isotopes And Atomic Mass Phet
published past the PhET
This model, rewritten to HTML5, promotes understanding of isotopes by providing a simple way to model isotopes of the first 10 elements in the Periodic Tabular array. In the virtually basic model, users click on an atomic symbol. The simulation displays a stable isotope for that cantlet. (For case, choose Helium and view a nucleus with ii protons and two neutrons.) Now, drag neutrons into the nucleus and scout to see if atom becomes unstable. Students may exist surprised to run into that Beryllium and Flourine, for case, are unstable with equal numbers of protons and neutrons in the nucleus. Click on "Abundance in Nature" to encounter how mutual or rare a detail isotope is in nature. Mass number and Atomic Mass (amu) are displayed in existent time. The newer HTML version has an additional model assuasive students to create their ain isotope mixtures to predict how boilerplate atomic mass changes past adjusting the isotope number.
This item is part of a growing drove of simulations adult by the Physics Education Technology projection (PhET), all bachelor for free apply. Registered users may also freely download lesson plans, video teaching tips, Power Point presentations, and other teacher-contributed material.
Please notation that this resources requires Java Applet Plug-in.
| Subjects | Levels | Resource Types |
|---|---|---|
| Teaching Practices - Active Learning = Modeling - Atomic Physics = Atomic Models - Nuclear Physics = Models of the Nucleus - Chemical science | - High School - Heart School - Lower Undergraduate | - Instructional Material = Activeness = Interactive Simulation |
| Advisable Courses | Categories | Ratings |
|---|---|---|
| - Concrete Science - Physics First - Conceptual Physics - Algebra-based Physics - AP Physics | - Activity - New teachers |
- Intended Users:
- Learner
Educator
- Format:
- text/html
- Access Rights:
- Costless access
- Restriction:
- © 2016 Academy of Colorado at Boulder
Additional data is available. - Keywords:
- atom, atom simulation, atomic mass, elements, isotope, nuclear properties, radioactivity, stable element, unstable element
- Record Cloner:
- Metadata instance created December 27, 2018 by Caroline Hall
- Tape Updated:
- December 27, 2018 by Caroline Hall
- Final Update
when Cataloged: - July 8, 2016
Next Generation Science Standards
Matter and Its Interactions (HS-PS1)
Students who demonstrate understanding can: (9-12)
- Apply the periodic tabular array as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms. (HS-PS1-1)
Disciplinary Core Ideas (K-12)
Construction and Backdrop of Matter (PS1.A)
- Each cantlet has a charged substructure consisting of a nucleus, which is made of protons and neutrons, surrounded by electrons. (ix-12)
Chemic Reactions (PS1.B)
- The full number of each blazon of atom is conserved, and thus the mass does not change. (6-8)
- The fact that atoms are conserved, together with knowledge of the chemical properties of the elements involved, can be used to describe and predict chemical reactions. (9-12)
Crosscutting Concepts (1000-12)
Patterns (One thousand-12)
- Macroscopic patterns are related to the nature of microscopic and diminutive-level structure. (six-8)
- Different patterns may be observed at each of the scales at which a organisation is studied and tin provide testify for causality in explanations of phenomena. (9-12)
Scale, Proportion, and Quantity (three-12)
- Phenomena that can be observed at ane scale may not be observable at another scale. (6-8)
- The significance of a miracle is dependent on the scale, proportion, and quantity at which information technology occurs. (9-12)
Structure and Function (K-12)
- Complex and microscopic structures and systems tin be visualized, modeled, and used to describe how their function depends on the shapes, limerick, and relationships amid its parts, therefore circuitous natural structures/systems can be analyzed to decide how they function. (6-8)
Scientific Knowledge Assumes an Order and Consistency in Natural Systems (one-12)
- Scientific discipline assumes that objects and events in natural systems occur in consistent patterns that are understandable through measurement and ascertainment. (vi-viii)
- Scientific discipline assumes the universe is a vast single system in which basic laws are consistent. (9-12)
NGSS Science and Engineering Practices (K-12)
Developing and Using Models (K-12)
- Modeling in 6–8 builds on K–5 and progresses to developing, using and revising models to depict, test, and predict more abstract phenomena and design systems. (vi-eight)
- Develop a model to describe unobservable mechanisms. (vi-8)
- Modeling in 9–12 builds on K–eight and progresses to using, synthesizing, and developing models to predict and show relationships amidst variables betwixt systems and their components in the natural and designed worlds. (9-12)
- Develop a model based on bear witness to illustrate the relationships between systems or between components of a arrangement. (9-12)
AAAS Benchmark Alignments (2008 Version)
iv. The Physical Setting
4D. The Structure of Matter
- 6-8: 4D/M1a. All affair is made up of atoms, which are far too small to come across directly through a microscope.
- 6-8: 4D/M1b. The atoms of any element are similar other atoms of the same chemical element, just are different from the atoms of other elements.
- 9-12: 4D/H1. Atoms are fabricated of a positively charged nucleus surrounded by negatively charged electrons. The nucleus is a tiny fraction of the book of an atom only makes up almost all of its mass. The nucleus is composed of protons and neutrons which have roughly the same mass but differ in that protons are positively charged while neutrons have no electric charge.
- ix-12: 4D/H2. The number of protons in the nucleus determines what an cantlet'southward electron configuration can be and then defines the chemical element. An atom'southward electron configuration, particularly the outermost electrons, determines how the atom can collaborate with other atoms. Atoms class bonds to other atoms by transferring or sharing electrons.
- 9-12: 4D/H3. Although neutrons have little effect on how an atom interacts with other atoms, the number of neutrons does bear upon the mass and stability of the nucleus. Isotopes of the same element take the same number of protons (and therefore of electrons) but differ in the number of neutrons.
- 9-12: 4D/H4. The nucleus of radioactive isotopes is unstable and spontaneously decays, emitting particles and/or wavelike radiation. Information technology cannot be predicted exactly when, if ever, an unstable nucleus volition decay, but a big group of identical nuclei decay at a predictable charge per unit. This predictability of decay rate allows radioactive decay to exist used for estimating the historic period of materials that comprise radioactive substances.
- 9-12: 4D/H5. Scientists keep to investigate atoms and accept discovered even smaller constituents of which neutrons and protons are made.
11. Mutual Themes
11B. Models
- 6-viii: 11B/M1. Models are often used to think about processes that happen as well slowly, likewise quickly, or on likewise pocket-size a calibration to find directly. They are as well used for processes that are likewise vast, as well circuitous, or too dangerous to study.
- half-dozen-8: 11B/M4. Simulations are oft useful in modeling events and processes.
11D. Scale
- 6-8: 11D/M3. Natural phenomena often involve sizes, durations, and speeds that are extremely small or extremely large. These phenomena may be difficult to capeesh because they involve magnitudes far exterior human experience.
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(PhET, Bedrock, 2016), WWW Document, (
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PhET Simulation: Isotopes and Atomic Mass-HTML Version (PhET, Bedrock, 2016), <https://phet.colorado.edu/en/simulation/isotopes-and-atomic-mass>.
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PhET Simulation: Isotopes and Atomic Mass-HTML Version. (2016, July viii). Retrieved October 20, 2022, from PhET: https://phet.colorado.edu/en/simulation/isotopes-and-atomic-mass
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PhET. PhET Simulation: Isotopes and Atomic Mass-HTML Version. Boulder: PhET, July eight, 2016. https://phet.colorado.edu/en/simulation/isotopes-and-atomic-mass (accessed 20 October 2022).
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. Boulder: PhET, 2016. 8 July 2016. 20 Oct. 2022 <https://phet.colorado.edu/en/simulation/isotopes-and-atomic-mass>.
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