Isotopes vs Ions Assignment

2

I see Cr⁺³, this is referring to

it's an isotope meaning it has a different number of neutrons

it's an anion because it is negatively charged

it's a cation because it is positively charged

2

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

it's an isotope meaning it has a different number of neutrons

it's an anion because it is negatively charged

it's a cation because it is positively charged

2

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

it's an isotope meaning it has a different number of neutrons

it's an anion because it is negatively charged

it's a cation because it is positively charged

2

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.

2

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.

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2

Chose the "Atom" tab.
Use the periodic table to build an atom of Beryllium.
Start by adding protons first and then neutrons.
What do you notice written on the upper right side of the atom?

2

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

2

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

2

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

cation

anion

Isotopes vs Ions Assignment

I see Cr+3, this is referring to

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

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

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.

Collect and Interpret Data using the phet simFind 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.

Collect and Interpret Data using the phet sim

Chose the "Atom" tab.Use the periodic table to build an atom of Beryllium.Start by adding protons first and then neutrons.What do you notice written on the upper right side of the atom?

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

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

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

I see Cr+3, this is referring to

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

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

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.

Collect and Interpret Data using the phet simFind 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.

Collect and Interpret Data using the phet sim

Chose the "Atom" tab.Use the periodic table to build an atom of Beryllium.Start by adding protons first and then neutrons.What do you notice written on the upper right side of the atom?

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

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

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

I see Cr⁺³, this is referring to

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

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.

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.

Chose the "Atom" tab.
Use the periodic table to build an atom of Beryllium.
Start by adding protons first and then neutrons.
What do you notice written on the upper right side of the atom?

I see Cr⁺³, this is referring to

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

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.

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.

Chose the "Atom" tab.
Use the periodic table to build an atom of Beryllium.
Start by adding protons first and then neutrons.
What do you notice written on the upper right side of the atom?