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Biblioteka

Isotopes vs Ions Assignment

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Posljednje ažuriranje 9 months ago
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Quick check after the video
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Learn about isotopes- for this section we will be using this phet sim
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Build an Ion
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Pitanje 1
1.

I see Cr+3, this is referring to

Pitanje 2
2.

I see uranium written as U-238 and U-235, this is referring to

Pitanje 3
3.

I see the following element written as S-2, this is referring to

Pitanje 4
4.

Check out this PhET sim, on isotopes and atomic mass before you use it to answer questions.

Observe what happens when more neutrons are added to the element.

Pitanje 5
5.

Collect and Interpret Data using the phet sim

Find out the atomic number, mass number, number of protons and number of neutrons and write the answers in the table below. You will be able to fill out the table in the drawing part.


These directions apply to a different phet sim to learn more about ions.

Directions: 

Go to the following website: Build an atom phet sim

*Click the green “Run Now” button below the large image to start the application. 

Play around with the simulation for a bit to become familiarize with the controls and functions. You can add particles to your atom by dragging them into the atom model. The “Element”, “Mass” and “Net Charge” boxes should be expanded. 

*Note that when particles are added to your model you can see if the atom is stable or unstable (labeled in the center), and if it is neutral or an ion (labeled on the outer rings). An ion means there is an overall charge to the atom. 

*When you are ready to start the exercise, press the “Reset All” button in the bottom left corner to clear any changes.

Pitanje 6
6.

  1. Chose the "Atom" tab.

  2. Use the periodic table to build an atom of Beryllium.

  3. Start by adding protons first and then neutrons.

  4. What do you notice written on the upper right side of the atom?

Pitanje 7
7.

Add electrons to your model . what is written right now next to the atom ? Explain

Pitanje 8
8.

Add one more electron to the atom, what has changed now? What do you notice now in the "Net Charge" box? 

Pitanje 9
9.

When beryllium makes an ion, it has a positive charge. Do we call that a cation or anion?